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Message-ID: <1432194929-26453-1-git-send-email-wenlin.kang@windriver.com> Date: Thu, 21 May 2015 15:55:29 +0800 From: Wenlin Kang <wenlin.kang@...driver.com> To: <dwmw2@...radead.org>, <computersforpeace@...il.com> CC: <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org> Subject: [PATCH] mtd: blktrans: change blktrans_getgeo return value Modify function blktrans_getgeo()'s return value to -EOPNOTSUPP when dev->tr->getgeo == NULL. We shouldn't make the return value to 0 when dev->tr->getgeo == NULL, because the function blktrans_getgeo() has an output value "hd_geometry" which is usually used by some application, if return 0, it will make some application get the wrong information. Signed-off-by: Wenlin Kang <wenlin.kang@...driver.com> --- drivers/mtd/mtd_blkdevs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 2b0c5287..2012216 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -273,7 +273,7 @@ static int blktrans_getgeo(struct block_device *bdev, struct hd_geometry *geo) if (!dev->mtd) goto unlock; - ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : 0; + ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -EOPNOTSUPP; unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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