From mboxrd@z Thu Jan 1 00:00:00 1970 From: mugunthanvnm@ti.com (Mugunthan V N) Date: Thu, 31 Jan 2013 01:26:53 +0530 Subject: [PATCH 1/1] drivers: net: davinci_cpdma: acknowledge interrupt properly Message-ID: <1359575813-15703-1-git-send-email-mugunthanvnm@ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org CPDMA interrupts are not properly acknowledged which leads to interrupt storm, only cpdma interrupt 0 is acknowledged in Davinci CPDMA driver. Changed cpdma_ctlr_eoi api to acknowledge 1 and 2 interrupts which are used for rx and tx respectively. Reported-by: Pantelis Antoniou Signed-off-by: Mugunthan V N --- drivers/net/ethernet/ti/davinci_cpdma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index f862918..afe14a6 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -487,6 +487,8 @@ int cpdma_ctlr_int_ctrl(struct cpdma_ctlr *ctlr, bool enable) void cpdma_ctlr_eoi(struct cpdma_ctlr *ctlr) { dma_reg_write(ctlr, CPDMA_MACEOIVECTOR, 0); + dma_reg_write(ctlr, CPDMA_MACEOIVECTOR, 1); + dma_reg_write(ctlr, CPDMA_MACEOIVECTOR, 2); } struct cpdma_chan *cpdma_chan_create(struct cpdma_ctlr *ctlr, int chan_num, -- 1.7.9.5