From 587808d5f59e842f9258a15e88ad530fcf6e6763 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Wed, 10 Feb 2010 15:34:46 -0300 Subject: V4L/DVB: ivtv: Fix ivtv_api_get_data() to avoid unneeded IO during IRQ handling ivtv_api_get_data() was performing more PCI MMIO than needed, resulting often in it accounting for more than half the total time spent in ivtv_irq_handler(). Now it only reads at most 7 of the 16 mailbox data words over the PCI bus, and in some instances only 2 or 3 data words as needed. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/ivtv/ivtv-mailbox.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/media/video/ivtv/ivtv-mailbox.h') diff --git a/drivers/media/video/ivtv/ivtv-mailbox.h b/drivers/media/video/ivtv/ivtv-mailbox.h index 6ef12091e3f..8247662c928 100644 --- a/drivers/media/video/ivtv/ivtv-mailbox.h +++ b/drivers/media/video/ivtv/ivtv-mailbox.h @@ -24,7 +24,8 @@ #define IVTV_MBOX_DMA_END 8 #define IVTV_MBOX_DMA 9 -void ivtv_api_get_data(struct ivtv_mailbox_data *mbox, int mb, u32 data[]); +void ivtv_api_get_data(struct ivtv_mailbox_data *mbdata, int mb, + int argc, u32 data[]); int ivtv_api(struct ivtv *itv, int cmd, int args, u32 data[]); int ivtv_vapi_result(struct ivtv *itv, u32 data[CX2341X_MBOX_MAX_DATA], int cmd, int args, ...); int ivtv_vapi(struct ivtv *itv, int cmd, int args, ...); -- cgit v1.2.3-70-g09d2