- 31 May, 2019 40 commits
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Laurent Pinchart authored
[ Upstream commit 167e5354 ] The PLL parameters are computed by looping over the range of acceptable M, N and E values, and selecting the combination that produces the output frequency closest to the target. The internal frequency constraints are taken into account by restricting the tested values for the PLL parameters, reducing the search space. The target frequency, however, is only taken into account when computing the post-PLL divider, which can result in a 0 value for the divider when the PLL output frequency being tested is lower than half of the target frequency. Subsequent loops will produce a better set of PLL parameters, but for some of the iterations this can result in a division by 0. Fix it by clamping the divider value. We could instead restrict the E values being tested in the inner loop, but that would require additional calculation that would likely be less efficient as the E parameter can only take three different values. Fixes: c25c0136 ("drm: rcar-du: lvds: D3/E3 support") Signed-off-by:
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by:
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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Laurent Pinchart authored
[ Upstream commit 00d082cc ] On the D3 SoC the LVDS PHY must be enabled in the same register write that enables the LVDS output. Skip writing the LVEN bit independently on that platform, it will be set by the write that sets LVRES. Signed-off-by:
Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by:
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Aditya Pakki authored
[ Upstream commit fd21b79e ] uuid in add_switch is allocted via kmemdup which can fail. The patch logs the error and cleans up the allocated memory for switch. Signed-off-by:
Aditya Pakki <pakki001@umn.edu> Reviewed-by:
Mukesh Ojha <mojha@codeaurora.org> Signed-off-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by:
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Kangjie Lu authored
[ Upstream commit 6183d5a5 ] No check is enforced for the return value of kzalloc, which may lead to NULL-pointer dereference. The patch fixes this issue. Signed-off-by:
Kangjie Lu <kjlu@umn.edu> Reviewed-by:
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Alexandre Courbot authored
[ Upstream commit 52fafc58 ] Commit 0650a914 ("media: mtk-vcodec: Correct return type for mem2mem buffer helpers") fixed the return types for mem2mem buffer helper functions by changing a few local variables from vb2_buffer to vb2_v4l2_buffer. However, it left a few accesses to vb2_buffer::planes as-is, accidentally turning them into accesses to vb2_v4l2_buffer::planes and resulting in values being read from/written to the wrong place. Fix this by inserting vb2_buf into these accesses so they mimic their original behavior. Fixes: 0650a914 ("media: mtk-vcodec: Correct return type for mem2mem buffer helpers") Signed-off-by:
Alexandre Courbot <acourbot@chromium.org> Reviewed-by:
Ezequiel Garcia <ezequiel@collabora.com> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by:
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Ard Biesheuvel authored
[ Upstream commit c2999c28 ] Since the following commit: 38ac0287 ("fbdev/efifb: Honour UEFI memory map attributes when mapping the FB") efifb_probe() checks its memory range via efi_mem_desc_lookup(), and this leads to a spurious error message: EFI_MEMMAP is not enabled at every boot on KVM. This is quite annoying since the error message appears even if you set "quiet" boot option. Since this happens on legacy boot, which strangely enough exposes a EFI framebuffer via screen_info, let's double check that we are doing an EFI boot before attempting to access the EFI memory map. Reported-by:
Takashi Iwai <tiwai@suse.de> Tested-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Jones <pjones@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20190328193429.21373-3-ard.biesheuvel@linaro.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Ezequiel Garcia authored
[ Upstream commit 9b9ea7c2 ] In order to prevent ISOC URBs from being infinitely resubmitted, the driver's USB disconnect handler must kill all the in-flight URBs. While here, change the URB packet status message to a debug level, to avoid spamming the console too much. This commit fixes a lockup caused by an interrupt storm coming from the URB completion handler. Signed-off-by:
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Dan Carpenter authored
[ Upstream commit 9c2ccc32 ] Smatch marks skb->data as untrusted so it warns that "evt_hdr->dlen" can copy up to 255 bytes and we only have room for two bytes. Even if this comes from the firmware and we trust it, the new policy generally is just to fix it as kernel hardenning. I can't test this code so I tried to be very conservative. I considered not allowing "evt_hdr->dlen == 1" because it doesn't initialize the whole variable but in the end I decided to allow it and manually initialized "asic_id" and "asic_ver" to zero. Fixes: e8454ff7 ("[media] drivers:media:radio: wl128x: FM Driver Common sources") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Kangjie Lu authored
[ Upstream commit aeb0d0f5 ] devm_kcalloc may fail and return a null pointer. The fix returns -ENOMEM upon failures to avoid null pointer dereferences. Signed-off-by:
Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by:
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Tetsuo Handa authored
[ Upstream commit c03a0fd0 ] syzbot is hitting use-after-free bug in uinput module [1]. This is because kobject_uevent(KOBJ_REMOVE) is called again due to commit 0f4dafc0 ("Kobject: auto-cleanup on final unref") after memory allocation fault injection made kobject_uevent(KOBJ_REMOVE) from device_del() from input_unregister_device() fail, while uinput_destroy_device() is expecting that kobject_uevent(KOBJ_REMOVE) is not called after device_del() from input_unregister_device() completed. That commit intended to catch cases where nobody even attempted to send "remove" uevents. But there is no guarantee that an event will ultimately be sent. We are at the point of no return as far as the rest of the kernel is concerned; there are no repeats or do-overs. Also, it is not clear whether some subsystem depends on that commit. If no subsystem depends on that commit, it will be better to remove the state_{add,remove}_uevent_sent logic. But we don't want to risk a regression (in a patch which will be backported) by trying to remove that logic. Therefore, as a first step, let's avoid the use-after-free bug by making sure that kobject_uevent(KOBJ_REMOVE) won't be triggered twice. [1] https://syzkaller.appspot.com/bug?id=8b17c134fe938bbddd75a45afaa9e68af43a362dReported-by:
syzbot <syzbot+f648cfb7e0b52bf7ae32@syzkaller.appspotmail.com> Analyzed-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Fixes: 0f4dafc0 ("Kobject: auto-cleanup on final unref") Cc: Kay Sievers <kay@vrfy.org> Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Oded Gabbay authored
[ Upstream commit e850b89f ] Unmapping ptes in the device MMU on Palladium can take a long time, which can cause a kernel BUG of CPU soft lockup. This patch minimize the chances for this bug by sleeping a little between unmapping ptes. Signed-off-by:
Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by:
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Sowjanya Komatineni authored
[ Upstream commit 01919493 ] Fixes: SPI driver can be built as module so perform SPI controller reset on probe to make sure it is in valid state before initiating transfer. Signed-off-by:
Sowjanya Komatineni <skomatineni@nvidia.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Hans de Goede authored
[ Upstream commit 1f87b0cd ] According to hidpp20_batterylevel_get_battery_info my Logitech K270 keyboard reports only 2 battery levels. This matches with what I've seen after testing with batteries at varying level of fullness, it always reports either 5% or 30%. Windows reports "battery good" for the 30% level. I've captured an USB trace of Windows reading the battery and it is getting the same info as the Linux hidpp code gets. Now that Linux handles these devices as hidpp devices, it reports the battery as being low as it treats anything under 31% as low, this leads to the user constantly getting a "Keyboard battery is low" warning from GNOME3, which is very annoying. This commit fixes this by changing the low threshold to anything under 30%, which I assume is what Windows does. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Takeshi Kihara authored
[ Upstream commit b9df2ea2 ] The clock sources of the AXI-bus clock (266.66 MHz) used for Audio-DMAC DMA transfers are: Channel R-Car H3 R-Car M3-W R-Car M3-N R-Car E3 --------------------------------------------------------------- Audio-DMAC0 S1D2 S1D2 S1D2 S1D2 Audio-DMAC1 S1D2 S1D2 S1D2 - As a result, change the parent clocks of the Audio-DMAC{0,1} module clocks on R-Car H3, R-Car M3-W, and R-Car M3-N to S1D2, and change the parent clock of the Audio-DMAC0 module on R-Car E3 to S1D2. NOTE: This information will be reflected in a future revision of the R-Car Gen3 Hardware Manual. Signed-off-by:
Takeshi Kihara <takeshi.kihara.df@renesas.com> [geert: Update R-Car D3, RZ/G2M, and RZ/G2E] Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Simon Horman <horms+renesas@verge.net.au> Signed-off-by:
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Ming Lei authored
[ Upstream commit 0383ad43 ] xen_biovec_phys_mergeable() only needs .bv_page of the 2nd bio bvec for checking if the two bvecs can be merged, so pass page to xen_biovec_phys_mergeable() directly. No function change. Cc: ris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Cc: xen-devel@lists.xenproject.org Cc: Omar Sandoval <osandov@fb.com> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
Ming Lei <ming.lei@redhat.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
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Ming Lei authored
[ Upstream commit db5ebd6e ] XEN has special page merge requirement, see xen_biovec_phys_mergeable(). We can't merge pages into one bvec simply for XEN. So move XEN's specific check on page merge into __bio_try_merge_page(), then abvoid to break XEN by multi-page bvec. Cc: ris Ostrovsky <boris.ostrovsky@oracle.com> Cc: xen-devel@lists.xenproject.org Cc: Omar Sandoval <osandov@fb.com> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by:
Juergen Gross <jgross@suse.com> Signed-off-by:
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Takeshi Kihara authored
[ Upstream commit 3c772f71 ] The clock sources of the AXI BUS clock (266.66 MHz) used for SYS-DMAC DMA transfers are: Channel R-Car H3 R-Car M3-W R-Car M3-N ------------------------------------------------- SYS-DMAC0 S0D3 S0D3 S0D3 SYS-DMAC1 S3D1 S3D1 S3D1 SYS-DMAC2 S3D1 S3D1 S3D1 As a result, change the parent clocks of the SYS-DMAC{1,2} module clocks on R-Car H3, R-Car M3-W, and R-Car M3-N to S3D1. NOTE: This information will be reflected in a future revision of the R-Car Gen3 Hardware Manual. Signed-off-by:
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Gustavo A. R. Silva authored
[ Upstream commit 76497732 ] The use of zero-sized array causes undefined behaviour when it is not the last member in a structure. As it happens to be in this case. Also, the current code makes use of a language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as this one is a flexible array member, introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last. Which is beneficial to cultivate a high-quality code. Fixes: e48f129c ("[SCSI] cxgb3i: convert cdev->l2opt to use rcu to prevent NULL dereference") Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Wen Yang authored
[ Upstream commit 64b92de9 ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./sound/soc/codecs/wcd9335.c:5193:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 5183, but without a correspon ding object release within this function. Signed-off-by:
Wen Yang <wen.yang99@zte.com.cn> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Vinod Koul <vkoul@kernel.org> Cc: Dan Carpenter <dan.carpenter@oracle.com> (commit_signer:1/11=9%,authored:1/11=9%) Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by:
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Wen Yang authored
[ Upstream commit c7052471 ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./sound/soc/fsl/fsl_utils.c:74:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function. Signed-off-by:
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Wen Yang authored
[ Upstream commit b820d52e ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./sound/soc/fsl/eukrea-tlv320.c:121:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 102, but without a correspo nding object release within this function. ./sound/soc/fsl/eukrea-tlv320.c:127:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 102, but without a correspo nding object release within this function. Signed-off-by:
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Nicolas Saenz Julienne authored
[ Upstream commit 58e75155 ] As seen on some USB wireless keyboards manufactured by Primax, the HID parser was using some assumptions that are not always true. In this case it's s the fact that, inside the scope of a main item, an Usage Page will always precede an Usage. The spec is not pretty clear as 6.2.2.7 states "Any usage that follows is interpreted as a Usage ID and concatenated with the Usage Page". While 6.2.2.8 states "When the parser encounters a main item it concatenates the last declared Usage Page with a Usage to form a complete usage value." Being somewhat contradictory it was decided to match Window's implementation, which follows 6.2.2.8. In summary, the patch moves the Usage Page concatenation from the local item parsing function to the main item parsing function. Signed-off-by:
Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Reviewed-by:
Terry Junge <terry.junge@poly.com> Signed-off-by:
Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
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Geert Uytterhoeven authored
[ Upstream commit 8440bb9b ] When compile-testing on arm: arch/sh/include/cpu-sh4/cpu/sh7786.h: In function ‘sh7786_mm_sel’: arch/sh/include/cpu-sh4/cpu/sh7786.h:135:21: warning: passing argument 1 of ‘__raw_readl’ makes pointer from integer without a cast [-Wint-conversion] return __raw_readl(0xFC400020) & 0x7; ^~~~~~~~~~ In file included from include/linux/io.h:25:0, from arch/sh/include/cpu-sh4/cpu/sh7786.h:14, from drivers/pinctrl/sh-pfc/pfc-sh7786.c:15: arch/arm/include/asm/io.h:113:21: note: expected ‘const volatile void *’ but argument is of type ‘unsigned int’ #define __raw_readl __raw_readl ^ arch/arm/include/asm/io.h:114:19: note: in expansion of macro ‘__raw_readl’ static inline u32 __raw_readl(const volatile void __iomem *addr) ^~~~~~~~~~~ __raw_readl() on SuperH is a macro that casts the passed I/O address to the correct type, while the implementations on most other architectures expect to be passed the correct pointer type. Add an explicit cast to fix this. Note that this also gets rid of a sparse warning on SuperH: arch/sh/include/cpu-sh4/cpu/sh7786.h:135:16: warning: incorrect type in argument 1 (different base types) arch/sh/include/cpu-sh4/cpu/sh7786.h:135:16: expected void const volatile [noderef] <asn:2>*<noident> arch/sh/include/cpu-sh4/cpu/sh7786.h:135:16: got unsigned int Signed-off-by:
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Leon Romanovsky authored
[ Upstream commit 6734b297 ] port_pd is treated as le32 in declaration and read, fix assignment to be in le32 too. This change fixes the following compilation warnings. drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: warning: incorrect type in assignment (different base types) drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: expected restricted __le32 [usertype] port_pd drivers/infiniband/hw/hns/hns_roce_ah.c:67:24: got restricted __be32 [usertype] Fixes: 9a443537 ("IB/hns: Add driver files for hns RoCE driver") Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Reviewed-by:
Gal Pressman <galpress@amazon.com> Reviewed-by:
Lijun Ou <ouliun@huawei.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com> Signed-off-by:
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Chengguang Xu authored
[ Upstream commit de36e16d ] Current overlap checking cannot correctly handle a case which is baseminor < existing baseminor && baseminor + minorct > existing baseminor + minorct. Signed-off-by:
Chengguang Xu <cgxu519@gmx.com> Signed-off-by:
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Peter Zijlstra authored
[ Upstream commit b69656fa ] New tooling got confused about this: arch/x86/lib/memcpy_64.o: warning: objtool: .fixup+0x7: return with UACCESS enabled While the code isn't wrong, it is tedious (if at all possible) to figure out what function a particular chunk of .fixup belongs to. This then confuses the objtool uaccess validation. Instead of returning directly from the .fixup, jump back into the right function. Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Peter Zijlstra authored
[ Upstream commit 67a0514a ] Objtool spotted that we call native_load_gs_index() with AC set. Re-arrange the code to avoid that. Signed-off-by:
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Peter Zijlstra authored
[ Upstream commit 88e47182 ] Occasionally GCC is less agressive with inlining and the following is observed: arch/x86/kernel/signal.o: warning: objtool: restore_sigcontext()+0x3cc: call to force_valid_ss.isra.5() with UACCESS enabled arch/x86/kernel/signal.o: warning: objtool: do_signal()+0x384: call to frame_uc_flags.isra.0() with UACCESS enabled Cure this by moving this code out of the AC=1 region, since it really isn't needed for the user access. Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Johannes Berg authored
[ Upstream commit 192a7e1f ] Back in commit 4d339989 ("iwlwifi: mvm: support ibss in dqa mode") we changed queue selection for IBSS to be: if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc) || ieee80211_is_deauth(fc)) return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; if (info->hw_queue == info->control.vif->cab_queue) return info->hw_queue; return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; Clearly, the thought at the time must've been that mac80211 will select the hw_queue as the cab_queue, so that we'll return and use that, where we store the multicast queue for IBSS. This, however, isn't true because mac80211 doesn't implement powersave for IBSS and thus selects the normal IBSS interface AC queue (best effort). This therefore always used the probe response queue, which maps to the BE FIFO. In commit cfbc6c4c ("iwlwifi: mvm: support mac80211 TXQs model") we rethought this code, and as a consequence now started mapping the multicast traffic to the multicast hardware queue since we no longer relied on mac80211 selecting the queue, doing it ourselves instead. This queue is mapped to the MCAST FIFO. however, this isn't actually enabled/controlled by the firmware in IBSS mode because we don't implement powersave, and frames from this queue can never go out in this case. Therefore, we got queue hang reports such as https://bugzilla.kernel.org/show_bug.cgi?id=201707 Fix this by mapping the multicast queue to the BE FIFO in IBSS so that all the frames can go out. Fixes: cfbc6c4c ("iwlwifi: mvm: support mac80211 TXQs model") Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Luca Coelho <luciano.coelho@intel.com> Signed-off-by:
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Peter Zijlstra authored
[ Upstream commit 4a6c91fb ] For CONFIG_TRACE_BRANCH_PROFILING=y the likely/unlikely things get overloaded and generate callouts to this code, and thus also when AC=1. Make it safe. Signed-off-by:
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Lior David authored
[ Upstream commit 49122ec4 ] The functions that send management TX frame have 3 possible results: success and other side acknowledged receive (ACK=1), success and other side did not acknowledge receive(ACK=0) and failure to send the frame. The current implementation incorrectly reports the ACK=0 case as failure. Signed-off-by:
Lior David <liord@codeaurora.org> Signed-off-by:
Maya Erez <merez@codeaurora.org> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
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Peter Zijlstra authored
[ Upstream commit a1247d06 ] Even though the atomic_dec_and_mutex_lock() in __static_key_slow_dec_cpuslocked() can never see a negative value in key->enabled the subsequent sanity check is re-reading key->enabled, which may have been set to -1 in the meantime by static_key_slow_inc_cpuslocked(). CPU A CPU B __static_key_slow_dec_cpuslocked(): static_key_slow_inc_cpuslocked(): # enabled = 1 atomic_dec_and_mutex_lock() # enabled = 0 atomic_read() == 0 atomic_set(-1) # enabled = -1 val = atomic_read() # Oops - val == -1! The test case is TCP's clean_acked_data_enable() / clean_acked_data_disable() as tickled by KTLS (net/ktls). Suggested-by:
Jakub Kicinski <jakub.kicinski@netronome.com> Reported-by:
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Wen Yang authored
[ Upstream commit 92606ec9 ] The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./arch/arm64/kernel/cpu_ops.c:102:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 69, but without a corresponding object release within this function. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Nicholas Kazlauskas authored
[ Upstream commit 6752bea8 ] [Why] The actual position for the cursor on the screen is essentially: x_out = x - x_plane - x_hotspot y_out = y - y_plane - y_hotspot The register values for cursor position and cursor hotspot need to be greater than zero when programmed, but we also need to subtract off the plane position to display the cursor at the correct position. Since we don't want x or y to be less than zero, we add the plane position as a positive value to x_hotspot or y_hotspot. However, what this doesn't take into account is that the hotspot registers are limited by the maximum cursor size. On DCN10 the cursor hotspot regitsers are masked to 0xFF, so they have a maximum value of 0-255. Values greater this will wrap, causing the cursor to display in the wrong position. In practice this means that for sufficiently large plane positions, the cursor will be drawn twice on the screen, and can cause screen flashes or p-state WARNS depending on what the wrapped value is. So we need a way to remove the value from x_plane and y_plane without exceeding the maximum cursor size. [How] Subtract as much as x_plane/y_plane as possible from x and y and place the remainder in the cursor hotspot register. The value for x_hotspot and y_hotspot can still wrap around but it won't happen in a case where the cursor is actually enabled. The cursor plane needs to intersect at least one pixel of the plane's rectangle to be enabled, so the cursor position + hotspot provided by userspace must always be strictly less than the maximum cursor size for the cursor to actually be enabled. Signed-off-by:
Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by:
Sun peng Li <Sunpeng.Li@amd.com> Acked-by:
Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Yannick Fertré authored
[ Upstream commit 0084c3c7 ] At the end of initialization, a delay is required by the panel. Without this delay, the panel could received a frame early & generate a crash of panel (black screen). Signed-off-by:
Yannick Fertré <yannick.fertre@st.com> Reviewed-by:
Philippe Cornu <philippe.cornu@st.com> Tested-by:
Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/1553155445-13407-1-git-send-email-yannick.fertre@st.comSigned-off-by:
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Stanley Chu authored
[ Upstream commit 3b141e8c ] For regulators used by UFS, vcc, vccq and vccq2 will have voltage range initialized by ufshcd_populate_vreg(), however other regulators may have undefined voltage range if dt-bindings have no such definition. In above undefined case, both "min_uV" and "max_uV" fields in ufs_vreg struct will be zero values and these values will be configured on regulators in different power modes. Currently this may have no harm if both "min_uV" and "max_uV" always keep "zero values" because regulator_set_voltage() will always bypass such invalid values and return "good" results. However improper values shall be fixed to avoid potential bugs. Simply bypass voltage configuration if voltage range is not defined. Signed-off-by:
Stanley Chu <stanley.chu@mediatek.com> Reviewed-by:
Avri Altman <avri.altman@wdc.com> Acked-by:
Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Stanley Chu authored
[ Upstream commit 0487fff7 ] Currently if a regulator has "<name>-fixed-regulator" property in device tree, it will skip current limit initialization. This lead to a zero "max_uA" value in struct ufs_vreg. However, "regulator_set_load" operation shall be required on regulators which have valid current limits, otherwise a zero "max_uA" set by "regulator_set_load" may cause unexpected behavior when this regulator is enabled or set as high power mode. Similarly, in device's icc_level configuration flow, the target icc_level shall be updated if regulator also has valid current limit, otherwise a wrong icc_level will be calculated by zero "max_uA" and thus causes unexpected results after it is written to device. Signed-off-by:
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Ping-Ke Shih authored
[ Upstream commit 60209d48 ] In case dev_alloc_skb fails, the fix safely returns to avoid potential NULL pointer dereference. Signed-off-by:
Ping-Ke Shih <pkshih@realtek.com> Signed-off-by:
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Geert Uytterhoeven authored
[ Upstream commit 1723fdec ] While devm_gpiod_get_index_optional() returns NULL if the GPIO is not present (i.e. -ENOENT), it may still return other error codes, like -EPROBE_DEFER. Currently these are not handled, leading to unrecoverable failures later in case of probe deferral: gpiod_set_consumer_name: invalid GPIO (errorpointer) gpiod_direction_output: invalid GPIO (errorpointer) gpiod_set_value_cansleep: invalid GPIO (errorpointer) gpiod_set_value_cansleep: invalid GPIO (errorpointer) gpiod_set_value_cansleep: invalid GPIO (errorpointer) Detect and propagate errors to fix this. Fixes: f3186dd8 ("spi: Optionally use GPIO descriptors for CS GPIOs") Signed-off-by:
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Alexandre Belloni authored
[ Upstream commit a652e00e ] The IRQ is requested before the struct rtc is allocated and registered, but this struct is used in the IRQ handler. This may lead to a NULL pointer dereference. Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc struct before requesting the IRQ. Signed-off-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by:
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