renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-19 02:34:01 +08:00
Code

usb: musb: cppi41: exit early when tx fifo is empty

Browse Source 
as soon as we find out tx fifo is empty, there's
no need to break out of the loop just to have another
branch to complete the transfer. We can just complete
transfer and exit early.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2015-02-27 13:21:14 -06:00
parent 1b61625f8b
commit af63429cf0
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/musb/musb_cppi41.c
View File

@ -280,19 +280,15 @@ static void cppi41_dma_callback(void *private_data)
do {
empty = musb_is_tx_fifo_empty(hw_ep);
if (empty)
break;
if (empty) {
cppi41_trans_done(cppi41_channel);
goto out;
}
wait--;
if (!wait)
break;
udelay(1);
} while (1);
empty = musb_is_tx_fifo_empty(hw_ep);
if (empty) {
cppi41_trans_done(cppi41_channel);
goto out;
}
}
list_add_tail(&cppi41_channel->tx_check,
&controller->early_tx_list);