mfd: atmel-hlcdc: Do not sleep in atomic context

readl_poll_timeout() calls usleep_range(), but
regmap_atmel_hlcdc_reg_write() is called in atomic context (regmap
spinlock held).

Replace the readl_poll_timeout() call by readl_poll_timeout_atomic().

Cc: <stable@vger.kernel.org>
Fixes: ea31c0cf9b07 ("mfd: atmel-hlcdc: Implement config synchronization")
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/mfd/atmel-hlcdc.c b/drivers/mfd/atmel-hlcdc.c
index eca7ea69b81c..4b15b0840f16 100644
--- a/drivers/mfd/atmel-hlcdc.c
+++ b/drivers/mfd/atmel-hlcdc.c
@@ -50,8 +50,9 @@ static int regmap_atmel_hlcdc_reg_write(void *context, unsigned int reg,
         if (reg <= ATMEL_HLCDC_DIS) {
                 u32 status;
 
-                readl_poll_timeout(hregmap->regs + ATMEL_HLCDC_SR, status,
-                                   !(status & ATMEL_HLCDC_SIP), 1, 100);
+                readl_poll_timeout_atomic(hregmap->regs + ATMEL_HLCDC_SR,
+                                          status, !(status & ATMEL_HLCDC_SIP),
+                                          1, 100);
         }
 
         writel(val, hregmap->regs + reg);