[PATCH V4 06/10] dmaengine: qcom_hidma: make error and success path common
From: Sinan Kaya <hidden>
Date: 2016-09-29 02:17:47
Also in:
linux-arm-msm, linux-devicetree, lkml
Subsystem:
arm/qualcomm mailing list, dma generic offload engine subsystem, qualcomm hidma driver, the rest · Maintainers:
Vinod Koul, Sinan Kaya, Linus Torvalds
Remove code duplication by feeding the error code from outside into successful data transfer handler. Signed-off-by: Sinan Kaya <redacted> --- drivers/dma/qcom/hidma_ll.c | 34 ++++++++++------------------------ 1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c
index 29fef4f..c911ca2 100644
--- a/drivers/dma/qcom/hidma_ll.c
+++ b/drivers/dma/qcom/hidma_ll.c@@ -241,11 +241,11 @@ static int hidma_post_completed(struct hidma_lldev *lldev, int tre_iterator, * Return a positive number if there are pending TREs or EVREs. * Return 0 if there is nothing to consume or no pending TREs/EVREs found. */ -static int hidma_handle_tre_completion(struct hidma_lldev *lldev) +static int hidma_handle_tre_completion(struct hidma_lldev *lldev, u8 err_info, + u8 err_code) { u32 evre_ring_size = lldev->evre_ring_size; u32 tre_ring_size = lldev->tre_ring_size; - u32 err_info, err_code, evre_write_off; u32 tre_iterator, evre_iterator; u32 num_completed = 0;
@@ -268,10 +268,13 @@ static int hidma_handle_tre_completion(struct hidma_lldev *lldev) u32 cfg; cfg = current_evre[HIDMA_EVRE_CFG_IDX]; - err_info = cfg >> HIDMA_EVRE_ERRINFO_BIT_POS; - err_info &= HIDMA_EVRE_ERRINFO_MASK; - err_code = - (cfg >> HIDMA_EVRE_CODE_BIT_POS) & HIDMA_EVRE_CODE_MASK; + if (!err_info) { + err_info = cfg >> HIDMA_EVRE_ERRINFO_BIT_POS; + err_info &= HIDMA_EVRE_ERRINFO_MASK; + } + if (!err_code) + err_code = (cfg >> HIDMA_EVRE_CODE_BIT_POS) & + HIDMA_EVRE_CODE_MASK; if (hidma_post_completed(lldev, tre_iterator, err_info, err_code))
@@ -314,27 +317,10 @@ static int hidma_handle_tre_completion(struct hidma_lldev *lldev) void hidma_cleanup_pending_tre(struct hidma_lldev *lldev, u8 err_info, u8 err_code) { - u32 tre_iterator; - u32 tre_ring_size = lldev->tre_ring_size; - int num_completed = 0; - u32 tre_read_off; - - tre_iterator = lldev->tre_processed_off; while (atomic_read(&lldev->pending_tre_count)) { - if (hidma_post_completed(lldev, tre_iterator, err_info, - err_code)) + if (hidma_handle_tre_completion(lldev, err_info, err_code)) break; - HIDMA_INCREMENT_ITERATOR(tre_iterator, HIDMA_TRE_SIZE, - tre_ring_size); - num_completed++; } - tre_read_off = (lldev->tre_processed_off + - HIDMA_TRE_SIZE * num_completed); - - tre_read_off = tre_read_off % tre_ring_size; - - /* record the last processed tre offset */ - lldev->tre_processed_off = tre_read_off; } static int hidma_ll_reset(struct hidma_lldev *lldev)
--
1.9.1