Re: [PATCH 04/13] mmc: bcm2835: add bcm2835_check_data_error

From: Shawn Lin
Date: Thu Jan 26 2017 - 21:05:48 EST


On 2017/1/27 7:37, Gerd Hoffmann wrote:
Factor out common code.

Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
drivers/mmc/host/bcm2835.c | 30 ++++++++++++------------------
1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c
index 6f9fb12..d25b85a 100644
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -951,6 +951,16 @@ static void bcm2835_timeout(unsigned long data)
spin_unlock_irqrestore(&host->lock, flags);
}

+static void bcm2835_check_data_error(struct bcm2835_host *host, u32 intmask)
+{
+ if (!host->data)
+ return;
+ if (intmask & (SDHSTS_CRC16_ERROR | SDHSTS_FIFO_ERROR))
+ host->data->error = -EILSEQ;
+ if (intmask & SDHSTS_REW_TIME_OUT)
+ host->data->error = -ETIMEDOUT;
+}
+
static void bcm2835_busy_irq(struct bcm2835_host *host, u32 intmask)
{
struct device *dev = &host->pdev->dev;
@@ -1007,15 +1017,7 @@ static void bcm2835_data_irq(struct bcm2835_host *host, u32 intmask)
if (!host->data)
return;


remove this check, !host->data, as well.

- if (intmask & (SDHSTS_CRC16_ERROR |
- SDHSTS_FIFO_ERROR |
- SDHSTS_REW_TIME_OUT)) {
- if (intmask & (SDHSTS_CRC16_ERROR |
- SDHSTS_FIFO_ERROR))
- host->data->error = -EILSEQ;
- else
- host->data->error = -ETIMEDOUT;
- }
+ bcm2835_check_data_error(host, intmask);

if (host->data->error) {
bcm2835_finish_data(host);
@@ -1043,15 +1045,7 @@ static void bcm2835_block_irq(struct bcm2835_host *host, u32 intmask)
return;
}

- if (intmask & (SDHSTS_CRC16_ERROR |
- SDHSTS_FIFO_ERROR |
- SDHSTS_REW_TIME_OUT)) {
- if (intmask & (SDHSTS_CRC16_ERROR |
- SDHSTS_FIFO_ERROR))
- host->data->error = -EILSEQ;
- else
- host->data->error = -ETIMEDOUT;
- }
+ bcm2835_check_data_error(host, intmask);

if (!host->dma_desc) {
WARN_ON(!host->blocks);



--
Best Regards
Shawn Lin