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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 14:56:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 14:56:26 -0700
commit22ae77bc7ac115b9d518d5cbc13d39317079b2b0 (patch)
tree574b7af678c0b1ad2c891ac5066292746788ece8 /drivers/mtd/mtdoops.c
parente379ec7c42343c6b6ef06a98de7c94db41c1423e (diff)
parent30bbf1406714cf464c56e96e4ad6a291907f5023 (diff)
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (53 commits) [MTD] struct device - replace bus_id with dev_name(), dev_set_name() [MTD] [NOR] Fixup for Numonyx M29W128 chips [MTD] mtdpart: Make ecc_stats more realistic. powerpc/85xx: TQM8548: Update DTS file for multi-chip support powerpc: NAND: FSL UPM: document new bindings [MTD] [NAND] FSL-UPM: Add wait flags to support board/chip specific delays [MTD] [NAND] FSL-UPM: add multi chip support [MTD] [NOR] Add device parent info to physmap_of [MTD] [NAND] Add support for NAND on the Socrates board [MTD] [NAND] Add support for 4KiB pages. [MTD] sysfs support should not depend on CONFIG_PROC_FS [MTD] [NAND] Add parent info for CAFÉ controller [MTD] support driver model updates [MTD] driver model updates (part 2) [MTD] driver model updates [MTD] [NAND] move gen_nand's probe function to .devinit.text [MTD] [MAPS] move sa1100 flash's probe function to .devinit.text [MTD] fix use after free in register_mtd_blktrans [MTD] [MAPS] Drop now unused sharpsl-flash map [MTD] ofpart: Check name property to determine partition nodes. ... Manually fix trivial conflict in drivers/mtd/maps/Makefile
Diffstat (limited to 'drivers/mtd/mtdoops.c')
-rw-r--r--drivers/mtd/mtdoops.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 1a6b3beabe8..1060337c06d 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -44,6 +44,7 @@ static struct mtdoops_context {
int oops_pages;
int nextpage;
int nextcount;
+ char *name;
void *oops_buf;
@@ -273,6 +274,9 @@ static void mtdoops_notify_add(struct mtd_info *mtd)
{
struct mtdoops_context *cxt = &oops_cxt;
+ if (cxt->name && !strcmp(mtd->name, cxt->name))
+ cxt->mtd_index = mtd->index;
+
if ((mtd->index != cxt->mtd_index) || cxt->mtd_index < 0)
return;
@@ -357,8 +361,10 @@ mtdoops_console_write(struct console *co, const char *s, unsigned int count)
spin_lock_irqsave(&cxt->writecount_lock, flags);
/* Check ready status didn't change whilst waiting for the lock */
- if (!cxt->ready)
+ if (!cxt->ready) {
+ spin_unlock_irqrestore(&cxt->writecount_lock, flags);
return;
+ }
if (cxt->writecount == 0) {
u32 *stamp = cxt->oops_buf;
@@ -383,8 +389,12 @@ static int __init mtdoops_console_setup(struct console *co, char *options)
{
struct mtdoops_context *cxt = co->data;
- if (cxt->mtd_index != -1)
+ if (cxt->mtd_index != -1 || cxt->name)
return -EBUSY;
+ if (options) {
+ cxt->name = kstrdup(options, GFP_KERNEL);
+ return 0;
+ }
if (co->index == -1)
return -EINVAL;
@@ -412,6 +422,7 @@ static int __init mtdoops_console_init(void)
cxt->mtd_index = -1;
cxt->oops_buf = vmalloc(OOPS_PAGE_SIZE);
+ spin_lock_init(&cxt->writecount_lock);
if (!cxt->oops_buf) {
printk(KERN_ERR "Failed to allocate mtdoops buffer workspace\n");
@@ -432,6 +443,7 @@ static void __exit mtdoops_console_exit(void)
unregister_mtd_user(&mtdoops_notifier);
unregister_console(&mtdoops_console);
+ kfree(cxt->name);
vfree(cxt->oops_buf);
}