Prepare to consolidate the DMA address/size quirk handling into one
single loop.
Signed-off-by: Russell King <rmk+ker...@arm.linux.org.uk>
---
drivers/mmc/host/sdhci.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 65b230ea179e..474d96943560 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -730,21 +730,22 @@ static void sdhci_prepare_data(struct sdhci_host *host,
struct mmc_command *cmd)
* scatterlist.
*/
if (host->flags & SDHCI_REQ_USE_DMA) {
- int broken, i;
struct scatterlist *sg;
+ unsigned int length_mask;
+ int i;
- broken = 0;
+ length_mask = 0;
if (host->flags & SDHCI_USE_ADMA) {
if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE)
- broken = 1;
+ length_mask = 3;
} else {
if (host->quirks & SDHCI_QUIRK_32BIT_DMA_SIZE)
- broken = 1;
+ length_mask = 3;
}
- if (unlikely(broken)) {
+ if (unlikely(length_mask)) {
for_each_sg(data->sg, sg, data->sg_len, i) {
- if (sg->length & 0x3) {
+ if (sg->length & length_mask) {
DBG("Reverting to PIO because of "
"transfer size (%d)\n",
sg->length);
@@ -760,10 +761,11 @@ static void sdhci_prepare_data(struct sdhci_host *host,
struct mmc_command *cmd)
* translation to device address space.
*/
if (host->flags & SDHCI_REQ_USE_DMA) {
- int broken, i;
struct scatterlist *sg;
+ unsigned int offset_mask;
+ int i;
- broken = 0;
+ offset_mask = 0;
if (host->flags & SDHCI_USE_ADMA) {
/*
* As we use 3 byte chunks to work around
@@ -771,15 +773,15 @@ static void sdhci_prepare_data(struct sdhci_host *host,
struct mmc_command *cmd)
* quirk.
*/
if (host->quirks & SDHCI_QUIRK_32BIT_ADMA_SIZE)
- broken = 1;
+ offset_mask = 3;
} else {
if (host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR)
- broken = 1;
+ offset_mask = 3;
}
- if (unlikely(broken)) {
+ if (unlikely(offset_mask)) {
for_each_sg(data->sg, sg, data->sg_len, i) {
- if (sg->offset & 0x3) {
+ if (sg->offset & offset_mask) {
DBG("Reverting to PIO because of "
"bad alignment\n");
host->flags &= ~SDHCI_REQ_USE_DMA;
--
2.1.0
--
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