From: Adrian Hunter <adrian.hunter@nokia.com>
Date: Mon, 23 Mar 2009 12:57:38 +0000 (+0200)
Subject: [MTD] [OneNAND] omap2: panic_write may be in an interrupt context
X-Git-Tag: v2.6.30-rc1~143^2~27
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=a29f280b739985a9e829d67af4d08e6584153495;p=linux-block.git

[MTD] [OneNAND] omap2: panic_write may be in an interrupt context

panic_write may read in an interrupt context.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 77a4f1446156..2c199b30ab58 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -294,6 +294,10 @@ static int omap3_onenand_read_bufferram(struct mtd_info *mtd, int area,
 	if (bram_offset & 3 || (size_t)buf & 3 || count < 384)
 		goto out_copy;
 
+	/* panic_write() may be in an interrupt context */
+	if (in_interrupt())
+		goto out_copy;
+
 	if (buf >= high_memory) {
 		struct page *p1;