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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2019-07-31 12:00:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-15 17:38:11 +0200 |
| commit | ce684d957c5672f3bb55e6b0872932b5b4c39c56 (patch) | |
| tree | c61d8cf4256800a703287dde5bec8463fad97726 /drivers/base | |
| parent | of/platform: Disable generic device linking code for PowerPC (diff) | |
| download | linux-ce684d957c5672f3bb55e6b0872932b5b4c39c56.tar.xz linux-ce684d957c5672f3bb55e6b0872932b5b4c39c56.zip | |
devcoredump: use memory_read_from_buffer
Use memory_read_from_buffer() to simplify devcd_readv().
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Link: https://lore.kernel.org/r/1564243146-5681-2-git-send-email-akinobu.mita@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20190731100007.32684-1-johannes@sipsolutions.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/devcoredump.c | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/drivers/base/devcoredump.c b/drivers/base/devcoredump.c index f1a3353f3494..3c960a63062f 100644 --- a/drivers/base/devcoredump.c +++ b/drivers/base/devcoredump.c @@ -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) |