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authorBenoît Thébaudeau <benoit.thebaudeau@advansee.com>2012-07-19 22:16:38 +0200
committerMarek Vasut <marex@denx.de>2012-09-01 16:21:50 +0200
commitcdeb916120a43c1bfe3de1a6d84ea403d43e59d5 (patch)
treef2f59042fdfa1ed679374eb29a8de89dd7764e6d /drivers
parent27e301e5b7df6254c768d27130d3a36c31d55c96 (diff)
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ehci: cosmetic: Define the number of qt_buffers
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Cc: Marek Vasut <marex@denx.de> Cc: Ilya Yanok <ilya.yanok@cogentembedded.com> Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/ehci-hcd.c4
-rw-r--r--drivers/usb/host/ehci.h11
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 2a82a29..5b3b906 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -183,7 +183,7 @@ static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
flush_dcache_range(addr, ALIGN(addr + sz, ARCH_DMA_MINALIGN));
idx = 0;
- while (idx < 5) {
+ while (idx < QT_BUFFER_CNT) {
td->qt_buffer[idx] = cpu_to_hc32(addr);
td->qt_buffer_hi[idx] = 0;
next = (addr + 4096) & ~4095;
@@ -195,7 +195,7 @@ static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
idx++;
}
- if (idx == 5) {
+ if (idx == QT_BUFFER_CNT) {
printf("out of buffer pointers (%u bytes left)\n", sz);
return -1;
}
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index cc00ce4..7992983 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -171,12 +171,13 @@ struct usb_linux_config_descriptor {
/* Queue Element Transfer Descriptor (qTD). */
struct qTD {
/* this part defined by EHCI spec */
- uint32_t qt_next; /* see EHCI 3.5.1 */
+ uint32_t qt_next; /* see EHCI 3.5.1 */
#define QT_NEXT_TERMINATE 1
- uint32_t qt_altnext; /* see EHCI 3.5.2 */
- uint32_t qt_token; /* see EHCI 3.5.3 */
- uint32_t qt_buffer[5]; /* see EHCI 3.5.4 */
- uint32_t qt_buffer_hi[5]; /* Appendix B */
+ uint32_t qt_altnext; /* see EHCI 3.5.2 */
+ uint32_t qt_token; /* see EHCI 3.5.3 */
+#define QT_BUFFER_CNT 5
+ uint32_t qt_buffer[QT_BUFFER_CNT]; /* see EHCI 3.5.4 */
+ uint32_t qt_buffer_hi[QT_BUFFER_CNT]; /* Appendix B */
/* pad struct for 32 byte alignment */
uint32_t unused[3];
};