Convert the function _rtw_init_recv_priv() away from returning _FAIL
and _SUCCESS, which uses inverted error logic. Return 0 for success
and negative values for failure instead.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230205080559.8319-3-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert the function rtl8188eu_init_recv_priv() away from returning
_FAIL and _SUCCESS, which uses inverted error logic. Return 0 for
success and negative values for failure instead.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230205080559.8319-2-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.  This requires saving off the root directory dentry to make
creation of individual device subdirectories easier.

Cc: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Sidong Yang <realwakka@gmail.com>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230202141138.2291946-1-gregkh@linuxfoundation.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Information in the TODO file for bit_rate configuration is
insufficient.

This patch adds information on how to approach when considering
to modify bit_rate to support upto 300kbps.
Signed-off-by: Guru Mehar Rachaputi <gurumeharrachaputi@gmail.com>
Acked-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/Y9laj+z0TuasBRx5@combine-ThinkPad-S1-YogaSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Clean up the NULL check for padapter->pnetdev->rx_handler_data.

The current code calls rcu_dereference while it holds the rcu read lock
and checks the pointer after releasing the lock. An rcu pointer may only be
used between calls to rcu_read_lock and rcu_read_unlock.

Replace the check with rcu_access_pointer. My understanding is that this
function returns the value of the pointer and needs no locking. We can
then check the pointer but we must not dereference it.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230131090057.241779-1-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Correct typo from 'witin' to 'within' in comment.
Signed-off-by: Jongwoo Han <jongwooo.han@gmail.com>
Link: https://lore.kernel.org/r/20230130164250.51877-1-jongwooo.han@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Replace a switch-case in rtw_write_port with an if statement and make the
code a bit shorter.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-10-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The option component in struct sta_xmit_priv is not used, remove it.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-9-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

apsd in struct sta_xmit_priv is initialised but not used. It can be
removed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-8-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

legacy_dz in struct sta_xmit_priv is initialised but not used. It can be
removed.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-7-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rtw_free_xmitframe_list iterates over the list of xmit_frames and frees
each entry. We can use list_for_each_entry_safe instead of coding this
manually. We need the _safe version as the current pxmitframe will be
removed from the list by rtw_free_xmitframe.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-6-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We can now change sta_pending in struct tx_servq from __queue to
list_head. The driver defines __queue as list_head + spinlock, the
spinlock is not used for sta_pending.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-5-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Modify the rtw_free_xmitframe_queue function to take a list_head pointer
instead of a __queue pointer.

This is an intermediate step towards changing struct tx_servq's
sta_pending from __queue to list_head.

Now that the function takes a list instead of a queue, we should also
rename it to rtw_free_xmitframe_list.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Modify the dequeue_xmitframes_to_sleeping_queue function to take a
list_head pointer instead of a __queue pointer.

This is an intermediate step towards changing struct tx_servq's
sta_pending from __queue to list_head.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

There's no need for a spinlock in rtw_free_xmitframe_queue.

This function is called only from rtw_free_stainfo. rtw_free_stainfo holds
pxmitpriv->lock during all rtw_free_xmitframe_queue calls.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20230130195303.138941-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename variable TPPoll_CQ to TP_POLL_CQ and AcmHwCtrl to ACM_HW_CTRL and
AcmHw_BeqEn to ACM_HW_BEQ_EN to avoid CamelCase which is not accepted by
checkpatch.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/f6731b36c0f3f22213436ba01abc8f1c685844ad.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename enum _RTL8192Pci_HW to _RTL8192PCI_HW and variable MXDMA2_NoLimit
to MXDMA2_NO_LIMIT and TPPoll to TP_POLL to avoid CamelCase which is not
accepted by checkpatch.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/1911a2bf4dfe6633e778d86d3aad1553cb629eb3.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove used constants MSR_LINK_SHIFT = 0 and MSR_LINK_NONE = 0. Use rules
a << 0 = a, 0 << 0 = 0 and msr | 0 = msr to remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/46bd1f075d5e4d211e1fc827843933907f7fee29.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove unused constants in and after _RTL8192Pci_HW of r8192E_hw.h. A
part of the constants would need to be renamed because of CamelCase on
others spaces are missing before and after "<<".
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/7eef6b217c00d123ee7194191209ff3bee707f8c.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove unused constants at beginning of r8192E_hw.h. A part of the
constants would need to be renamed because of CamelCase on others spaces
are missing before and after "<<".
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/d01232f5ef10eac02abb3f31f2ac6f53614fa954.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename constants BaseBand_Config_PHY_REG to BB_CONFIG_PHY_REG and
BaseBand_Config_AGC_TAB to BB_CONFIG_AGC_TAB to avoid CamelCase which is
not accepted by checkpatch.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/6d26690c7c2c68cc7c766c981293bd8e40999ed0.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove unused constants from enum rt_customer_id. A part of the constants
would need to be renamed because of CamelCase.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/108d80f0ae1006b716205dce0ca9a7ee597ba1dd.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rxSNRdB is initialized and set but never read. Remove dead code. Local
variable rx_snrX is then of no use. Remove rx_snrX as well. Local
variable tmp_rxsnr is then of no use. Remove tmp_rxsnr as well.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b3150d506556375c4b155c51eabf79e128f50780.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename constant sCrcLng to S_CRC_LEN to avoid CamelCase which is not
accepted by checkpatch. Use S_CRC_LEN instead of fix value with comment
to improve readability.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/b0139a958123881fd04b60110a6889f726d943cc.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename constant TxBBGainTableLength to TX_BB_GAIN_TABLE_LEN,
CCKTxBBGainTableLength to CCK_TX_BB_GAIN_TABLE_LEN and
RT_CID_819x_Netcore to RT_CID_819X_NETCORE to avoid CamelCase which is
not accepted by checkpatch. Added spaces before and after "-" to fix
checkpatch message.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/0f390222d1bd272c3e63d1b2936109ac50e9f05f.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

There's only two defines left in usb_ops_linux.h. Move those defines to
usb_ops_linux.c, where they are used.

Remove the now empty file usb_ops_linux.h.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230124210108.62170-5-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove some unused defines from usb_ops_linux.h.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230124210108.62170-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

usb_ops_linux.h has a number of defines that strip the regs parameter from
function that should be used as urb callbacks.

Remove the defines for functions that don't exist in the r8188eu driver.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230124210108.62170-3-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the regs parameter from usb_read_port_complete, it is not used.

Without the regs parameter, there's no need for the define that makes
usb_read_port_complete usable as urb callback function.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230124210108.62170-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

txbytesmulticast, txbytesbroadcast and signal_quality are initialized and
increased or set but never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/c469f82619625fecbed95532967cc7ec2b12e5f9.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

txbeaconerr, txmanageokint and txcmdpktokint are initialized and increased
but never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/6c922591c48512692f77729ac91849ebb4e61bd1.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

txviokint, txvookint and txbeaconokint are initialized and increased but
never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/c45501eee5fbf2cc3e5ad999bbbe8e071e341a2c.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

txoverflow, txbeokint and txbkokint are initialized and increased but
never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/023f612dc35eca3a74c31344f7dbb168180bf437.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rxint, ints and shints are initialized and increased but never read.
Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/ee6ee009d139a3da3d2c171d7ac6454271b4da9b.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

num_process_phyinfo, received_bwtype and rxoverflow are initialized and
increased but never read. Remove dead code. As a result prxsc is unused
which in result makes rxsc_sgien_exflg unused. Remove prxsc and
rxsc_sgien_exflg as well.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/ff9daec237b795a01629080d0d5f7ec73b2d89da.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

numqry_phystatus, numqry_phystatusCCK and numqry_phystatusHT are
initialized and increased but never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20aedc3bd3cc860ee8d86d205461f479ac201fea.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

numpacket_toself, numpacket_matchbssid and received_preamble_GI are
initialized and increased but never read. Remove dead code. As a result
the local variable preamble_guardinterval is unused. Remove it also.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/0ed5f4134176393110fdb0b7424df7a8a6fc6262.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rxcrcerrmin, rxcrcerrmax and rxcrcerrmid are initialized and increased
but never read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/4c791fbb3559ce15de60b7bdcabbc50b0ee9adb9.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rxdatacrcerr and rxmgmtcrcerr are initialized and increased but never
read. Remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/32c9183fa2f4edd24ae6f93d56b808eb1821832b.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

rxrdu and rxok are initialized and increased but never read. Remove dead
code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20738d339066e36f5347c7e5011bd3d1aa3e4f53.1674675808.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>