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Subject[PATCH v2 27/31] usb/gadget/snps_udc_core: Remove struct timer_list.data use
Date
If the probe fails, udc_remove() will not be called, so there is no
reason to make del_timer_sync() calls conditional. As a result, use of
the .data field can be dropped, in support of making removing this field
entirely from struct timer_list.

Cc: Felipe Balbi <balbi@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Raviteja Garimella <raviteja.garimella@broadcom.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/usb/gadget/udc/snps_udc_core.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/gadget/udc/snps_udc_core.c b/drivers/usb/gadget/udc/snps_udc_core.c
index 5460e5ba1c3c..e05bdc16e1e3 100644
--- a/drivers/usb/gadget/udc/snps_udc_core.c
+++ b/drivers/usb/gadget/udc/snps_udc_core.c
@@ -3067,14 +3067,12 @@ void udc_remove(struct udc *dev)
stop_timer++;
if (timer_pending(&udc_timer))
wait_for_completion(&on_exit);
- if (udc_timer.data)
- del_timer_sync(&udc_timer);
+ del_timer_sync(&udc_timer);
/* remove pollstall timer */
stop_pollstall_timer++;
if (timer_pending(&udc_pollstall_timer))
wait_for_completion(&on_pollstall_exit);
- if (udc_pollstall_timer.data)
- del_timer_sync(&udc_pollstall_timer);
+ del_timer_sync(&udc_pollstall_timer);
udc = NULL;
}
EXPORT_SYMBOL_GPL(udc_remove);
@@ -3164,10 +3162,6 @@ int udc_probe(struct udc *dev)
u32 reg;
int retval;

- /* mark timer as not initialized */
- udc_timer.data = 0;
- udc_pollstall_timer.data = 0;
-
/* device struct setup */
dev->gadget.ops = &udc_ops;

@@ -3207,8 +3201,8 @@ int udc_probe(struct udc *dev)
goto finished;

/* timer init */
- setup_timer(&udc_timer, udc_timer_function, 1);
- setup_timer(&udc_pollstall_timer, udc_pollstall_timer_function, 1);
+ setup_timer(&udc_timer, udc_timer_function, 0);
+ setup_timer(&udc_pollstall_timer, udc_pollstall_timer_function, 0);

/* set SD */
reg = readl(&dev->regs->ctl);
--
2.7.4
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