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usb: gadget: udc: Avoid tasklet passing a global

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[ Upstream commit f9dc3713df1229aa8168169e9cf1010fbac68de5 ]

There's no reason for the tasklet callback to set an argument since it
always uses a global. Instead, use the global directly, in preparation
for converting the tasklet subsystem to modern callback conventions.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Stable-dep-of: 1fdeb8b9f29d ("wifi: iwl3945: Add missing check for create_singlethread_workqueue")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kees Cook 2020-07-13 15:01:33 -07:00 • committed by Greg Kroah-Hartman
commit 9198eefd10
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/gadget/udc/snps_udc_core.c
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@ -96,9 +96,7 @@ static int stop_pollstall_timer;
static DECLARE_COMPLETION(on_pollstall_exit);
/* tasklet for usb disconnect */
static DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect,
(unsigned long) &udc);
static DECLARE_TASKLET(disconnect_tasklet, udc_tasklet_disconnect, 0);
/* endpoint names used for print */
static const char ep0_string[] = "ep0in";
@ -1661,7 +1659,7 @@ static void usb_disconnect(struct udc *dev)
/* Tasklet for disconnect to be outside of interrupt context */
static void udc_tasklet_disconnect(unsigned long par)
{
struct udc *dev = (struct udc *)(*((struct udc **) par));
struct udc *dev = udc;
u32 tmp;
DBG(dev, "Tasklet disconnect\n");