Re: [PATCH v2 05/10] usb: musb: tusb6010_omap: Do not reset the other direction's packet size

From: Peter Ujfalusi
Date: Thu May 11 2017 - 02:19:23 EST




On 2017-05-11 02:16, Joe Perches wrote:
On Wed, 2017-05-10 at 12:07 -0500, Bin Liu wrote:
On Wed, May 10, 2017 at 11:42:27AM +0300, Peter Ujfalusi wrote:
We have one register for each EP to set the maximum packet size for both
TX and RX.
If for example an RX programming would happen before the previous TX
transfer finishes we would reset the TX packet side.

To fix this issue, only modify the TX or RX part of the register.
[]
diff --git a/drivers/usb/musb/tusb6010_omap.c b/drivers/usb/musb/tusb6010_omap.c
[]
@@ -389,15 +389,19 @@ static int tusb_omap_dma_program(struct dma_channel *channel, u16 packet_sz,
if (chdat->tx) {
/* Send transfer_packet_sz packets at a time */
- musb_writel(ep_conf, TUSB_EP_MAX_PACKET_SIZE_OFFSET,
- chdat->transfer_packet_sz);
+ u32 psize = musb_readl(ep_conf, TUSB_EP_MAX_PACKET_SIZE_OFFSET);

checkpatch.pl complains about declaration and assignment together.

No it doesn't.

It 'only' complains about:
WARNING: Missing a blank line after declarations

which is valid.

- PÃter