- 14 Jul, 2008 40 commits
-
-
Heiko Carstens authored
Finally fixes a possible scheduling while in atomic context bug. The driver used to wait on a waitqueue if no empty buffer was available. This could lead to a deadlock if the driver was called from non-schedulable context. So fix this. The write operation may fail now. It returns the number of characters accepted. put_char will never fail, since it writes characters to an intermediate buffer which gets flushed as soon as it is full. That means the driver now can busy wait if something is in the intermediate buffer and a write_string operation follows. Seems to be an acceptable compromise, since that shouldn't happen too often. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
-
Heiko Carstens authored
After all we came to the conclusion that this interface doesn't make any sense. Besides that the ioctl number used was never registered, the header file isn't exported, and we doubt there is even a single user. So remove this interface, since it eases maintenance. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: -
Heiko Carstens authored
Most likely it is broken anyway because of the changes in memory detection. Since we can't test it and there are probably better ways that using a P390 card, remove support for it. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
-
Christian Borntraeger authored
Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
-
Klaus-D. Wacker authored
Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by:
Klaus-D. Wacker <kdwacker@de.ibm.com> Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Hongjie Yang authored
Signed-off-by:
Hongjie Yang <hongjie@us.ibm.com> Signed-off-by:
-
Michael Holzheu authored
Signed-off-by:
Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
-
Martin Schwidefsky authored
The message descriptions are still missing though .. Signed-off-by:
-
Michael Holzheu authored
Signed-off-by:
-
Gerald Schaefer authored
Signed-off-by:
Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by:
-
Gerald Schaefer authored
Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Jan Glauber authored
Signed-off-by:
Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by:
-
Frank Blaschka authored
Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by:
Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by:
-
Ursula Braun authored
Cc: Jeff Garzik <jgarzik@redhat.com> Signed-off-by:
Ursula Braun <braunu@de.ibm.com> Signed-off-by:
-
Ursula Braun authored
Cc: David S. Miller <davem@davemloft.net> Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Felix Beck authored
Signed-off-by:
Felix Beck <felix.beck@de.ibm.com> Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Martin Schwidefsky authored
Signed-off-by:
-
Michael Ernst authored
Unnecessary dev_info, dev_warn and printk messages are removed. Signed-off-by:
Michael Ernst <mernst@de.ibm.com> Signed-off-by:
-
Heiko Carstens authored
Move memory detection code to own file and also simplify it. Also add an interface which can be called at any time to get the current memory layout. This interface is needed by our kernel internal system dumper. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Cc: Frank Munzert <munzert@de.ibm.com> Signed-off-by:
-
Sebastian Ott authored
In some cases where the channel subsystem decides to drop a subchannel device device_unregister may be called twice, which results in an oops. The patch prevents this by only unregistering registered devices. Signed-off-by:
Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by:
-
Heiko Carstens authored
Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by:
-
Heiko Carstens authored
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by:
-
Akinobu Mita authored
Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
-
Akinobu Mita authored
Signed-off-by:
-
Akinobu Mita authored
Signed-off-by:
-
Akinobu Mita authored
Signed-off-by:
-
Julia Lawall authored
As noted by Akinobu Mita in patch b1fceac2, alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. drivers/s390/char/raw3270.c | 11 +---------- drivers/s390/char/sclp_con.c | 2 -- 2 files changed, 1 insertion(+), 12 deletions(-) This was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; statement S; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...) ... when != E ( - BUG_ON (E == NULL); | - if (E == NULL) S ) @@ expression E,E1; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...) ... when != E - memset(E,0,E1); // </smpl> Signed-off-by:
Julia Lawall <julia@diku.dk> Signed-off-by:
-
Julia Lawall authored
As noted by Akinobu Mita in patch b1fceac2, alloc_bootmem and related functions never return NULL and always return a zeroed region of memory. Thus a NULL test or memset after calls to these functions is unnecessary. arch/s390/kernel/topology.c | 2 -- 1 file changed, 2 deletions(-) This was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression E; statement S; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...) ... when != E ( - BUG_ON (E == NULL); | - if (E == NULL) S ) @@ expression E,E1; @@ E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...) ... when != E - memset(E,0,E1); // </smpl> Signed-off-by:
-
Heiko Carstens authored
Some macros in pgtable.h access members from struct task_struct. Currently always works since sched.h seems always to be included before asm/pgtable.h. Unfortunately that is not anymore true with Jeremy Fitzhardinge's ptep_modify_prot transaction abstraction patch. So fix this. Signed-off-by:
-
Ralph Wuerthner authored
Add support for new micro code load of CEX2C and CEX2A adapters, which uses different IDs. This patch just adds the IDs to the existing drivers. Signed-off-by:
Ralph Wuerthner <ralph.wuerthner@de.ibm.com> Signed-off-by:
-
Hendrik Brueckner authored
Now it is possible to specify additional kernel parameters on the IPL command line using the IPL PARM option. If the Linux system is already running, the new reipl sysfs attribute 'parm' can be used to change kernel parameters for the next reboot. Examples: IPL C PARM dasd=1234 root=/dev/dasda1 IPL 1234 PARM savesys=mylnxnss echo "init=/bin/bash" > /sys/firmware/reipl/ccw/parm Signed-off-by:
Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by:
-
Felix Beck authored
The ap poll mechanism is converted to use a high-resolution timer for polling. This allows more specific polling. With this a new sysfs attribute is introduced to specify the polling rate in nanoseconds. Signed-off-by:
-
Peter Oberparleiter authored
Fix a number of sclp_vt220 cleanup problems: * fix list_empty check after list_del() * mark init-only flag as __initdata * remove implicit dependency between slab_available() and num_pages * straighten multiple init handling (use init count) Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
-
