diff options
Diffstat (limited to 'drivers/mmc/mmci.c')
| -rw-r--r-- | drivers/mmc/mmci.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c index 166c9b0ad04..634ef53e85a 100644 --- a/drivers/mmc/mmci.c +++ b/drivers/mmc/mmci.c @@ -19,13 +19,14 @@ #include <linux/highmem.h> #include <linux/mmc/host.h> #include <linux/mmc/protocol.h> +#include <linux/amba/bus.h> +#include <linux/clk.h> +#include <asm/cacheflush.h> #include <asm/div64.h> #include <asm/io.h> #include <asm/scatterlist.h> #include <asm/sizes.h> -#include <asm/hardware/amba.h> -#include <asm/hardware/clock.h> #include <asm/mach/mmc.h> #include "mmci.h" @@ -157,6 +158,13 @@ mmci_data_irq(struct mmci_host *host, struct mmc_data *data, else if (status & (MCI_TXUNDERRUN|MCI_RXOVERRUN)) data->error = MMC_ERR_FIFO; status |= MCI_DATAEND; + + /* + * We hit an error condition. Ensure that any data + * partially written to a page is properly coherent. + */ + if (host->sg_len && data->flags & MMC_DATA_READ) + flush_dcache_page(host->sg_ptr->page); } if (status & MCI_DATAEND) { mmci_stop_data(host); @@ -292,7 +300,7 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id, struct pt_regs *regs) /* * Unmap the buffer. */ - mmci_kunmap_atomic(host, &flags); + mmci_kunmap_atomic(host, buffer, &flags); host->sg_off += len; host->size -= len; @@ -301,6 +309,13 @@ static irqreturn_t mmci_pio_irq(int irq, void *dev_id, struct pt_regs *regs) if (remain) break; + /* + * If we were reading, and we have completed this + * page, ensure that the data cache is coherent. + */ + if (status & MCI_RXACTIVE) + flush_dcache_page(host->sg_ptr->page); + if (!mmci_next_sg(host)) break; @@ -479,13 +494,9 @@ static int mmci_probe(struct amba_device *dev, void *id) goto host_free; } - ret = clk_use(host->clk); - if (ret) - goto clk_free; - ret = clk_enable(host->clk); if (ret) - goto clk_unuse; + goto clk_free; host->plat = plat; host->mclk = clk_get_rate(host->clk); @@ -558,8 +569,6 @@ static int mmci_probe(struct amba_device *dev, void *id) iounmap(host->base); clk_disable: clk_disable(host->clk); - clk_unuse: - clk_unuse(host->clk); clk_free: clk_put(host->clk); host_free: @@ -594,7 +603,6 @@ static int mmci_remove(struct amba_device *dev) iounmap(host->base); clk_disable(host->clk); - clk_unuse(host->clk); clk_put(host->clk); mmc_free_host(mmc); |