The patch titled
drivers/char/amiserial.c: add missing local_irq_restore
has been added to the -mm tree. Its filename is
drivers-char-amiserialc-add-missing-local_irq_restore.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: drivers/char/amiserial.c: add missing local_irq_restore
From: Julia Lawall <julia@xxxxxxx>
rs_init() is failing to restore interrupts on two error paths, and is
incorrectly calling tty_unregister_driver() with local interrupts
disabled.
Fix these things by disabling interrupts later, after the reauest_irq()
calls.
A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E1;
identifier f;
@@
f (...) { <+...
* local_irq_save (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>
[akpm@xxxxxxxxxxxxxxxxxxxx: reimplement the fix]
Signed-off-by: Julia Lawall <julia@xxxxxxx>
Cc: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/amiserial.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN drivers/char/amiserial.c~drivers-char-amiserialc-add-missing-local_irq_restore drivers/char/amiserial.c
--- a/drivers/char/amiserial.c~drivers-char-amiserialc-add-missing-local_irq_restore
+++ a/drivers/char/amiserial.c
@@ -2021,8 +2021,6 @@ static int __init rs_init(void)
state->baud_base = amiga_colorclock;
state->xmit_fifo_size = 1;
- local_irq_save(flags);
-
/* set ISRs, and then disable the rx interrupts */
error = request_irq(IRQ_AMIGA_TBE, ser_tx_int, 0, "serial TX", state);
if (error)
@@ -2033,6 +2031,8 @@ static int __init rs_init(void)
if (error)
goto fail_free_irq;
+ local_irq_save(flags);
+
/* turn off Rx and Tx interrupts */
custom.intena = IF_RBF | IF_TBE;
mb();
_
Patches currently in -mm which might be from julia@xxxxxxx are
linux-next.patch
drivers-char-amiserialc-add-missing-local_irq_restore.patch
drivers-gpio-timbgpioc-add-missing-unlock.patch
arch-powerpc-kernel-vioc-add-missing-unlock.patch
drivers-macintosh-macio-adbc-add-missing-unlock.patch
drivers-scsi-qla2xxx-qla_attrc-add-missing-unlock.patch
drivers-serial-pmac_zilogc-add-missing-unlock.patch
drivers-usb-gadget-s3c-hsotgc-add-missing-unlock.patch
drivers-acpi-use-kasprintf.patch
drivers-acpi-use-kasprintf-fix.patch
arch-x86-pci-use-kasprintf.patch
arch-arm-plat-pxa-dmac-correct-null-test.patch
arch-powerpc-platforms-pseries-use-kasprintf.patch
drivers-media-video-avoid-null-dereference.patch
drivers-scsi-libsas-use-sam_good.patch
drivers-scsi-remove-unnecessary-null-test.patch
drivers-message-move-dereference-after-null-test.patch
drivers-scsi-correct-the-size-argument-to-kmalloc.patch
drivers-scsi-bfa-bfad_imc-eliminate-useless-code.patch
drivers-char-ppdevc-use-kasprintf.patch
drivers-edac-introduce-missing-kfree.patch
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