Re: [PATCH] misc: ad525x_dpot: Fix the enabling of the "otpXen" attributes

From: Michael Hennerich
Date: Thu Nov 19 2015 - 06:00:01 EST

On 11/18/2015 05:16 PM, Dan Bogdan Nechita wrote:
Currently writing the attributes with "echo" will result in comparing:
"enabled\n" with "enabled\0" and attribute is always set to false.

Use the sysfs_streq() instead because it treats both NUL and
new-line-then-NUL as equivalent string terminations.

Signed-off-by: Dan Bogdan Nechita <dan.bogdan.nechita@xxxxxxxxx>

Acked-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>

drivers/misc/ad525x_dpot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
index 15e8807..4230e6a 100644
--- a/drivers/misc/ad525x_dpot.c
+++ b/drivers/misc/ad525x_dpot.c
@@ -452,7 +452,7 @@ static ssize_t sysfs_set_reg(struct device *dev,
int err;

if (reg & DPOT_ADDR_OTP_EN) {
- if (!strncmp(buf, "enabled", sizeof("enabled")))
+ if (sysfs_streq(buf, "enabled"))
set_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask);
clear_bit(DPOT_RDAC_MASK & reg, data->otp_en_mask);

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