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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH] mtd mtdraw: Fix partial page read
Date: Sat, 15 Sep 2012 16:56:02 +0200	[thread overview]
Message-ID: <1347720962-32574-1-git-send-email-s.hauer@pengutronix.de> (raw)

When reading parts of a page we have to limit the maximum bytes copied
the the remaining bytes of a page.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
---
 drivers/mtd/mtdraw.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/mtdraw.c b/drivers/mtd/mtdraw.c
index d28ae07..29f6a8c 100644
--- a/drivers/mtd/mtdraw.c
+++ b/drivers/mtd/mtdraw.c
@@ -129,6 +129,7 @@ static ssize_t mtdraw_read(struct cdev *cdev, void *buf, size_t count,
 
 	while (ret > 0 && count > 0) {
 		toread = min_t(int, count, mtd->writesize + mtd->oobsize);
+		toread = min_t(int, toread, mtd->writesize + mtd->oobsize - skip);
 		ret = mtdraw_read_unaligned(mtd, buf, toread,
 					    skip, numpage++ * mtd->writesize);
 		buf += ret;
-- 
1.7.10.4


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             reply	other threads:[~2012-09-15 14:56 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-15 14:56 Sascha Hauer [this message]
2012-09-16  8:46 ` Robert Jarzmik
2012-09-16  8:58   ` Sascha Hauer
2012-09-16 19:44     ` Robert Jarzmik

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