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| H A D | debug.c | diff 5dbe1f8eb8c5ac69394400a5b86fd81775e96c43 Sun Mar 26 00:42:17 CDT 2023 Wei Chen <harperchen1110@gmail.com> wifi: rtlwifi: fix incorrect error codes in rtl_debugfs_set_write_reg()
If there is a failure during copy_from_user or user-provided data buffer is
invalid, rtl_debugfs_set_write_reg should return negative error code instead
of a positive value count.
Fix this bug by returning correct error code. Moreover, the check of buffer
against null is removed since it will be handled by copy_from_user.
Fixes: 610247f46feb ("rtlwifi: Improve debugging by using debugfs")
Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230326054217.93492-1-harperchen1110@gmail.com
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