linux-kernel - [PATCH 3/4] Staging: zram: make zram_read return a bio error if the device is not initialized

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Date:	Fri, 17 Dec 2010 17:03:15 +0100
From:	Jerome Marchand <jmarchan@...hat.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Nitin Gupta <ngupta@...are.org>
Subject: [PATCH 3/4] 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@...hat.com>
---
 zram_drv.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index d649b3e..4085958 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;
 	}
 

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