This patch is to fix some bugs in reboot driver. Which includes auto selection of the MFD_SYSCON for the driver, use of container to locate restart handler, correction of the count down failure timer and ordering of the header file.
Signed-off-by: Feng Kan <[email protected]> --- drivers/power/reset/Kconfig | 3 ++- drivers/power/reset/syscon-reboot.c | 25 ++++++++++--------------- 2 files changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig index addb26a..3b451e1 100644 --- a/drivers/power/reset/Kconfig +++ b/drivers/power/reset/Kconfig @@ -120,6 +120,7 @@ config POWER_RESET_KEYSTONE config POWER_RESET_SYSCON bool "Generic SYSCON regmap reset driver" - depends on POWER_RESET && MFD_SYSCON && OF + depends on POWER_RESET && OF + select MFD_SYSCON help Reboot support for generic SYSCON mapped register reset. diff --git a/drivers/power/reset/syscon-reboot.c b/drivers/power/reset/syscon-reboot.c index 948e0ee..90dfdbf 100644 --- a/drivers/power/reset/syscon-reboot.c +++ b/drivers/power/reset/syscon-reboot.c @@ -14,14 +14,15 @@ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ +#include <linux/delay.h> #include <linux/io.h> -#include <linux/of_device.h> -#include <linux/of_address.h> -#include <linux/platform_device.h> #include <linux/notifier.h> #include <linux/mfd/syscon.h> -#include <linux/regmap.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> #include <linux/reboot.h> +#include <linux/regmap.h> struct syscon_reboot_context { struct regmap *map; @@ -30,21 +31,17 @@ struct syscon_reboot_context { struct notifier_block restart_handler; }; -static struct syscon_reboot_context *syscon_reboot_ctx; - static int syscon_restart_handle(struct notifier_block *this, unsigned long mode, void *cmd) { - struct syscon_reboot_context *ctx = syscon_reboot_ctx; - unsigned long timeout; + struct syscon_reboot_context *ctx = + container_of(this, struct syscon_reboot_context, + restart_handler); /* Issue the reboot */ - if (ctx->map) - regmap_write(ctx->map, ctx->offset, ctx->mask); + regmap_write(ctx->map, ctx->offset, ctx->mask); - timeout = jiffies + HZ; - while (time_before(jiffies, timeout)) - cpu_relax(); + mdelay(1000); pr_emerg("Unable to restart system\n"); return NOTIFY_DONE; @@ -76,8 +73,6 @@ static int syscon_reboot_probe(struct platform_device *pdev) if (err) dev_err(dev, "can't register restart notifier (err=%d)\n", err); - syscon_reboot_ctx = ctx; - return 0; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
