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-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 2a82a29125..5b3b9062f7 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 cc00ce428b..7992983bbb 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];
};