Commit ce684d95 authored by Akinobu Mita's avatar Akinobu Mita Committed by Greg Kroah-Hartman
Browse files

devcoredump: use memory_read_from_buffer 



Use memory_read_from_buffer() to simplify devcd_readv().

Reviewed-by: default avatarChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Link: https://lore.kernel.org/r/1564243146-5681-2-git-send-email-akinobu.mita@gmail.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20190731100007.32684-1-johannes@sipsolutions.net


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9c1c5e0b

drivers/base/devcoredump.c

+1 −10
Original line number Diff line number Diff line
@@ -164,16 +164,7 @@ static struct class devcd_class = { 
static ssize_t devcd_readv(char *buffer, loff_t offset, size_t count,

			   void *data, size_t datalen)

{

	if (offset > datalen)

		return -EINVAL;



	if (offset + count > datalen)

		count = datalen - offset;



	if (count)

		memcpy(buffer, ((u8 *)data) + offset, count);



	return count;

	return memory_read_from_buffer(buffer, count, &offset, data, datalen);

}



static void devcd_freev(void *data)

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