diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0078-dwc_otg-mask-correct-interrupts-after-transaction-er.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0078-dwc_otg-mask-correct-interrupts-after-transaction-er.patch | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0078-dwc_otg-mask-correct-interrupts-after-transaction-er.patch b/target/linux/brcm2708/patches-3.10/0078-dwc_otg-mask-correct-interrupts-after-transaction-er.patch deleted file mode 100644 index c36f92c3f9..0000000000 --- a/target/linux/brcm2708/patches-3.10/0078-dwc_otg-mask-correct-interrupts-after-transaction-er.patch +++ /dev/null @@ -1,69 +0,0 @@ -From 5608eaff0f301e9bf73998da020644f1673b66e4 Mon Sep 17 00:00:00 2001 -From: P33M <P33M@github.com> -Date: Sat, 13 Jul 2013 20:41:26 +0100 -Subject: [PATCH 078/196] dwc_otg: mask correct interrupts after transaction - error recovery - -The dwc_otg driver will unmask certain interrupts on a transaction -that previously halted in the error state in order to reset the -QTD error count. The various fine-grained interrupt handlers do not -consider that other interrupts besides themselves were unmasked. - -By disabling the two other interrupts only ever enabled in DMA mode -for this purpose, we can avoid unnecessary function calls in the -IRQ handler. This will also prevent an unneccesary FIQ interrupt -from being generated if the FIQ is enabled. ---- - drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 21 +++++++++++++++++++++ - 1 file changed, 21 insertions(+) - -diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c -index e8b4d35..27b673f 100644 ---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c -+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c -@@ -1851,7 +1851,11 @@ static int32_t handle_hc_nak_intr(dwc_otg_hcd_t * hcd, - * transfers in DMA mode for the sole purpose of - * resetting the error count after a transaction error - * occurs. The core will continue transferring data. -+ * Disable other interrupts unmasked for the same -+ * reason. - */ -+ disable_hc_int(hc_regs, datatglerr); -+ disable_hc_int(hc_regs, ack); - qtd->error_count = 0; - goto handle_nak_done; - } -@@ -1963,6 +1967,15 @@ static int32_t handle_hc_ack_intr(dwc_otg_hcd_t * hcd, - halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_ACK); - } - } else { -+ /* -+ * An unmasked ACK on a non-split DMA transaction is -+ * for the sole purpose of resetting error counts. Disable other -+ * interrupts unmasked for the same reason. -+ */ -+ if(hcd->core_if->dma_enable) { -+ disable_hc_int(hc_regs, datatglerr); -+ disable_hc_int(hc_regs, nak); -+ } - qtd->error_count = 0; - - if (hc->qh->ping_state) { -@@ -2328,6 +2341,14 @@ static int32_t handle_hc_datatglerr_intr(dwc_otg_hcd_t * hcd, - qtd->urb, qtd, DWC_OTG_HC_XFER_XACT_ERR); - halt_channel(hcd, hc, qtd, DWC_OTG_HC_XFER_XACT_ERR); - } else if (hc->ep_is_in) { -+ /* An unmasked data toggle error on a non-split DMA transaction is -+ * for the sole purpose of resetting error counts. Disable other -+ * interrupts unmasked for the same reason. -+ */ -+ if(hcd->core_if->dma_enable) { -+ disable_hc_int(hc_regs, ack); -+ disable_hc_int(hc_regs, nak); -+ } - qtd->error_count = 0; - } - --- -1.9.1 - |