[PATCH 4/4] firmware: send -EINTR on signal abort on fallback mechanism
From: "Luis R. Rodriguez" <mcgrof@kernel.org>
Date: 2017-06-14 22:20:55
Also in:
linux-fsdevel, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
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 <redacted> Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> --- drivers/base/firmware_class.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 70fc42e5e0da..da043cb16e2f 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c@@ -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);
--
2.11.0