From: Shawn Lin <shawn.lin@rock-chips.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org, Shawn Lin <shawn.lin@rock-chips.com>
Subject: [RFC PATCH 2/8] mmc: debugfs: remove BUG_ON from mmc_ext_csd_open
Date: Tue, 18 Oct 2016 20:03:57 +0800 [thread overview]
Message-ID: <1476792237-6347-1-git-send-email-shawn.lin@rock-chips.com> (raw)
In-Reply-To: <1476792192-6265-1-git-send-email-shawn.lin@rock-chips.com>
Return error value for file_operations callback instead
of triggering BUG_ON which is meaningless. Personally I
don't believe n != EXT_CSD_STR_LEN could happen. Anyway,
propagate the error to the caller.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---
drivers/mmc/core/debugfs.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index c8451ce..30623b8 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -321,7 +321,11 @@ static int mmc_ext_csd_open(struct inode *inode, struct file *filp)
for (i = 0; i < 512; i++)
n += sprintf(buf + n, "%02x", ext_csd[i]);
n += sprintf(buf + n, "\n");
- BUG_ON(n != EXT_CSD_STR_LEN);
+
+ if (n != EXT_CSD_STR_LEN) {
+ err = -EINVAL;
+ goto out_free;
+ }
filp->private_data = buf;
kfree(ext_csd);
--
2.3.7
next prev parent reply other threads:[~2016-10-18 11:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-18 12:03 [RFC PATCH 0/8] Attempt to clean up BUG_ONs for mmc-tree Shawn Lin
2016-10-18 12:03 ` [RFC PATCH 1/8] mmc: core: remove BUG_ONs from sdio Shawn Lin
2016-10-27 8:03 ` Ulf Hansson
2016-10-18 12:03 ` Shawn Lin [this message]
2016-10-18 12:04 ` [RFC PATCH 3/8] mmc: core: remove BUG_ONs from mmc Shawn Lin
2016-10-27 8:14 ` Ulf Hansson
2016-10-18 12:04 ` [RFC PATCH 4/8] mmc: core: remove BUG_ONs from sd Shawn Lin
2016-10-18 12:04 ` [RFC PATCH 5/8] mmc: core: remove BUG_ONs from core.c Shawn Lin
2016-10-18 12:04 ` [RFC PATCH 6/8] mmc: sdio_uart: remove meaningless BUG_ON Shawn Lin
2016-10-18 12:04 ` [RFC PATCH 7/8] mmc: queue: remove BUG_ON for bounce_sg Shawn Lin
2016-10-18 12:04 ` [RFC PATCH 8/8] mmc: mmc_test: remove BUG_ONs and deploy error handling Shawn Lin
2016-10-27 8:19 ` [RFC PATCH 0/8] Attempt to clean up BUG_ONs for mmc-tree Ulf Hansson
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