Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-24 21:21:41 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb: dwc3: gadget: Fix BUG in RT config

Browse Source 
Using spin_lock() in hard irq handler is pointless
and causes a BUG() in RT (real-time) configuration
so get rid of it.

The reason it's pointless is because the driver is
basically accessing register which is, anyways,
atomic.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Roger Quadros 2015-09-21 11:08:36 +03:00 committed by Felipe Balbi
parent b431ba8803
commit a66c275b3d
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/dwc3/gadget.c
View File

@ -2665,8 +2665,6 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
int i; int i;
irqreturn_t ret = IRQ_NONE; irqreturn_t ret = IRQ_NONE;
spin_lock(&dwc->lock);
for (i = 0; i < dwc->num_event_buffers; i++) { for (i = 0; i < dwc->num_event_buffers; i++) {
irqreturn_t status; irqreturn_t status;
@ -2675,8 +2673,6 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
ret = status; ret = status;
} }
spin_unlock(&dwc->lock);
return ret; return ret;
} }