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authorAndrew Murray <amurray@embedded-bits.co.uk>2013-10-01 15:58:56 +0100
committerTom Rini <trini@ti.com>2013-10-07 07:43:46 -0400
commitddd025bb6e283744dc93d3653a0b6fbd5c35e904 (patch)
tree6163e25243a8ff5a2a40799cceb6f7a7e516cd42 /drivers/usb/musb
parent6478cde618ad3bfdb9b62f62e8c76498b0d6637f (diff)
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usb: Fix error handling in musb_hcd.c
The wait_until_[rx|tx]ep_ready functions return a u8 to indicate success containing the value 0, 1 or -1. This patch changes the return type to an int to accommodate the negative return values. These functions are used in the file using calls such as if (!wait_until... Where a -1 is returned it is mishandled and treated as success instead of a CRC error. This patch addresses this. Cc: Marek Vasut <marex@denx.de> Cc: Tom Rini <trini@ti.com> Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk> Acked-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/musb_hcd.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/usb/musb/musb_hcd.c b/drivers/usb/musb/musb_hcd.c
index 3dc5d6a..41a8126 100644
--- a/drivers/usb/musb/musb_hcd.c
+++ b/drivers/usb/musb/musb_hcd.c
@@ -267,7 +267,7 @@ static int wait_until_ep0_ready(struct usb_device *dev, u32 bit_mask)
/*
* waits until tx ep is ready. Returns 1 when ep is ready and 0 on error.
*/
-static u8 wait_until_txep_ready(struct usb_device *dev, u8 ep)
+static int wait_until_txep_ready(struct usb_device *dev, u8 ep)
{
u16 csr;
int timeout = CONFIG_MUSB_TIMEOUT;
@@ -299,7 +299,7 @@ static u8 wait_until_txep_ready(struct usb_device *dev, u8 ep)
/*
* waits until rx ep is ready. Returns 1 when ep is ready and 0 on error.
*/
-static u8 wait_until_rxep_ready(struct usb_device *dev, u8 ep)
+static int wait_until_rxep_ready(struct usb_device *dev, u8 ep)
{
u16 csr;
int timeout = CONFIG_MUSB_TIMEOUT;
@@ -1009,7 +1009,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
writew(csr | MUSB_TXCSR_TXPKTRDY, &musbr->txcsr);
/* Wait until the TxPktRdy bit is cleared */
- if (!wait_until_txep_ready(dev, MUSB_BULK_EP)) {
+ if (wait_until_txep_ready(dev, MUSB_BULK_EP) != 1) {
readw(&musbr->txcsr);
usb_settoggle(dev, ep, dir_out,
(csr >> MUSB_TXCSR_H_DATATOGGLE_SHIFT) & 1);
@@ -1044,7 +1044,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
writew(csr | MUSB_RXCSR_H_REQPKT, &musbr->rxcsr);
/* Wait until the RxPktRdy bit is set */
- if (!wait_until_rxep_ready(dev, MUSB_BULK_EP)) {
+ if (wait_until_rxep_ready(dev, MUSB_BULK_EP) != 1) {
csr = readw(&musbr->rxcsr);
usb_settoggle(dev, ep, dir_out,
(csr >> MUSB_S_RXCSR_H_DATATOGGLE) & 1);
@@ -1217,7 +1217,7 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe,
writew(csr | MUSB_RXCSR_H_REQPKT, &musbr->rxcsr);
/* Wait until the RxPktRdy bit is set */
- if (!wait_until_rxep_ready(dev, MUSB_INTR_EP)) {
+ if (wait_until_rxep_ready(dev, MUSB_INTR_EP) != 1) {
csr = readw(&musbr->rxcsr);
usb_settoggle(dev, ep, dir_out,
(csr >> MUSB_S_RXCSR_H_DATATOGGLE) & 1);