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firmware: send -EINTR on signal abort on fallback mechanism

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Right now we send -EAGAIN to a syfs write which got interrupted.
Userspace can't tell what happened though, send -EINTR if we
were killed due to a signal so userspace can tell things apart.

This is only applicable to the fallback mechanism.

Reported-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luis R. Rodriguez 2017-07-20 13:13:39 -07:00 committed by Greg Kroah-Hartman
parent 0d1f417eee
commit 76098b36b5
1 changed files with 6 additions and 3 deletions
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9
drivers/base/firmware_class.c
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@ -1089,9 +1089,12 @@ static int _request_firmware_load(struct firmware_priv *fw_priv,
mutex_unlock(&fw_lock);
}
if (fw_state_is_aborted(&buf->fw_st))
retval = -EAGAIN;
else if (buf->is_paged_buf && !buf->data)
if (fw_state_is_aborted(&buf->fw_st)) {
if (retval == -ERESTARTSYS)
retval = -EINTR;
else
retval = -EAGAIN;
} else if (buf->is_paged_buf && !buf->data)
retval = -ENOMEM;
device_del(f_dev);