Thread (17 messages) 17 messages, 11 authors, 2018-01-10

Re: [-next PATCH 2/4] treewide: Use DEVICE_ATTR_RW

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From: Jarkko Nikula <jarkko.nikula@bitmer.com>
Date: 2017-12-20 09:00:12
Also in: alsa-devel, dri-devel, intel-gfx, linux-omap, linux-pm, linux-scsi, linux-serial, linux-usb, lkml, platform-driver-x86

On Tue, Dec 19, 2017 at 10:15:07AM -0800, Joe Perches wrote:
Convert DEVICE_ATTR uses to DEVICE_ATTR_RW where possible.
...
  
quoted hunk ↗ jump to hunk
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index 7a54e3083203..79d4dc785e5c 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -854,7 +854,7 @@ static ssize_t dma_op_mode_store(struct device *dev,
 	return size;
 }
 
-static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
+static DEVICE_ATTR_RW(dma_op_mode);
 
While I can ack this part here if it helps generic cleanup effort I
don't understart would it improve code readability in general? Mode 644
is clear and don't need any grepping but for DEVICE_ATTR_RW() I had to go
through all of these files in order to see what does it mean:

DEVICE_ATTR_RW: include/linux/device.h
__ATTR_RW: include/linux/sysfs.h
S_IWUSR: include/uapi/linux/stat.h
S_IRUGO: include/linux/stat.h

Jarkko Nikula [off-list ref]
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