diff options
Diffstat (limited to 'drivers/mtd/mtdoops.c')
| -rw-r--r-- | drivers/mtd/mtdoops.c | 16 |
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); } |