[PATCH RESEND] rtsx_usb_ms: Use msleep_interruptible() in polling loop

From: Ben Hutchings
Date: Sun Sep 27 2015 - 20:35:10 EST

rtsx_usb_ms creates a task that mostly sleeps, but tasks in
uninterruptible sleep still contribute to the load average (for
bug-compatibility with Unix). A load average of ~1 on a system that
should be idle is somewhat alarming.

Change the sleep to be interruptible, but still ignore signals.

A better fix might be to replace this loop with a delayed work item.

References: https://bugs.debian.org/765717
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
--- a/drivers/memstick/host/rtsx_usb_ms.c
+++ b/drivers/memstick/host/rtsx_usb_ms.c
@@ -706,7 +706,8 @@ poll_again:
if (host->eject)

- msleep(1000);
+ if (msleep_interruptible(1000))
+ flush_signals(current);

Ben Hutchings
All extremists should be taken out and shot.

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