From: Jerome Marchand <jmarchan@redhat.com>
Date: Fri, 17 Dec 2010 16:03:15 +0000 (+0100)
Subject: Staging: zram: make zram_read return a bio error if the device is not initialized
X-Git-Tag: upstream/snapshot3+hdmi~11216^2~892
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1aa326640d1e91d32179310441fa3030c501d0f3;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

Staging: zram: make zram_read return a bio error if the device is not initialized

Make zram_read() return a bio error if the device is not initialized
instead of pretending nothing happened.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index 0ab931e..01d6dd9 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -208,8 +208,7 @@ static int zram_read(struct zram *zram, struct bio *bio)
 	struct bio_vec *bvec;
 
 	if (unlikely(!zram->init_done)) {
-		set_bit(BIO_UPTODATE, &bio->bi_flags);
-		bio_endio(bio, 0);
+		bio_endio(bio, -ENXIO);
 		return 0;
 	}