diff options
Diffstat (limited to 'drivers/mtd/devices')
| -rw-r--r-- | drivers/mtd/devices/bcm47xxsflash.c | 24 | ||||
| -rw-r--r-- | drivers/mtd/devices/pmc551.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/devices/slram.c | 2 |
3 files changed, 21 insertions, 7 deletions
diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c index 1c65c15b31a1..514be04c0b6c 100644 --- a/drivers/mtd/devices/bcm47xxsflash.c +++ b/drivers/mtd/devices/bcm47xxsflash.c @@ -296,16 +296,30 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev) dev_err(dev, "can't request region for resource %pR\n", res); return -EBUSY; } - b47s->window = ioremap_cache(res->start, resource_size(res)); - if (!b47s->window) { - dev_err(dev, "ioremap failed for resource %pR\n", res); - return -ENOMEM; - } b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash); b47s->cc_read = bcm47xxsflash_bcma_cc_read; b47s->cc_write = bcm47xxsflash_bcma_cc_write; + /* + * On old MIPS devices cache was magically invalidated when needed, + * allowing us to use cached access and gain some performance. Trying + * the same on ARM based BCM53573 results in flash corruptions, we need + * to use uncached access for it. + * + * It may be arch specific, but right now there is only 1 ARM SoC using + * this driver, so let's follow Broadcom's reference code and check + * ChipCommon revision. + */ + if (b47s->bcma_cc->core->id.rev == 54) + b47s->window = ioremap_nocache(res->start, resource_size(res)); + else + b47s->window = ioremap_cache(res->start, resource_size(res)); + if (!b47s->window) { + dev_err(dev, "ioremap failed for resource %pR\n", res); + return -ENOMEM; + } + switch (b47s->bcma_cc->capabilities & BCMA_CC_CAP_FLASHT) { case BCMA_CC_FLASHT_STSER: b47s->type = BCM47XXSFLASH_TYPE_ST; diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c index 220f9200fa52..cadea0620cd0 100644 --- a/drivers/mtd/devices/pmc551.c +++ b/drivers/mtd/devices/pmc551.c @@ -82,7 +82,7 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/types.h> #include <linux/init.h> #include <linux/ptrace.h> diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index a70eb83e68f1..8087c36dc693 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -30,7 +30,7 @@ #include <linux/module.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/ptrace.h> |
