diff mbox series

[net-next,1/3] nfc: s3fwrn5: use signed integer for parsing GPIO numbers

Message ID 1606404819-30647-1-git-send-email-bongsu.jeon@samsung.com
State New
Headers show
Series [net-next,1/3] nfc: s3fwrn5: use signed integer for parsing GPIO numbers | expand

Commit Message

Bongsu Jeon Nov. 26, 2020, 3:33 p.m. UTC
From: Krzysztof Kozlowski <krzk@kernel.org>

GPIOs - as returned by of_get_named_gpio() and used by the gpiolib - are
signed integers, where negative number indicates error.  The return
value of of_get_named_gpio() should not be assigned to an unsigned int
because in case of !CONFIG_GPIOLIB such number would be a valid GPIO.

Fixes: c04c674fadeb ("nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC Chip")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
---
 drivers/nfc/s3fwrn5/i2c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Bongsu Jeon Nov. 27, 2020, 5:41 a.m. UTC | #1
On 11/27/20, Bongsu Jeon <bs.jeon87@gmail.com> wrote:
> On Fri, Nov 27, 2020 at 2:06 AM Krzysztof Kozlowski <krzk@kernel.org>

> wrote:

>>

>> On Fri, Nov 27, 2020 at 12:33:37AM +0900, bongsu.jeon2@gmail.com wrote:

>> > From: Krzysztof Kozlowski <krzk@kernel.org>

>> >

>> > GPIOs - as returned by of_get_named_gpio() and used by the gpiolib -

>> > are

>> > signed integers, where negative number indicates error.  The return

>> > value of of_get_named_gpio() should not be assigned to an unsigned int

>> > because in case of !CONFIG_GPIOLIB such number would be a valid GPIO.

>> >

>> > Fixes: c04c674fadeb ("nfc: s3fwrn5: Add driver for Samsung S3FWRN5 NFC

>> > Chip")

>> > Cc: <stable@vger.kernel.org>

>> > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

>>

>> Why do you send my patch?

>>

>

> I think that your patch should be applied before refactoring for this

> driver.

> So, I applied your patch to net-next branch and included your patch at

> my patch list.

> Is this the wrong process?

>


Sorry to confuse you.
I found your patch when i updated my workspace using git pull.

>> Best regards,

>> Krzysztof

>
diff mbox series

Patch

diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
index 0ffa389..ae26594 100644
--- a/drivers/nfc/s3fwrn5/i2c.c
+++ b/drivers/nfc/s3fwrn5/i2c.c
@@ -25,8 +25,8 @@  struct s3fwrn5_i2c_phy {
 	struct i2c_client *i2c_dev;
 	struct nci_dev *ndev;
 
-	unsigned int gpio_en;
-	unsigned int gpio_fw_wake;
+	int gpio_en;
+	int gpio_fw_wake;
 
 	struct mutex mutex;