Hi,
On 2018-12-10 22:03, Wolfram Sang wrote:
> Rejecting transfers should be handled by the core. Also, this will
> ensure proper locking which was forgotten in this open coded version.
>
> Signed-off-by: Wolfram Sang <[email protected]>
Tested-by: Marek Szyprowski <[email protected]>
Works fine on Odroid U3.
> ---
> drivers/i2c/busses/i2c-s3c2410.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-s3c2410.c
> b/drivers/i2c/busses/i2c-s3c2410.c
> index 2f2e28d60ef5..7c76edb25514 100644
> --- a/drivers/i2c/busses/i2c-s3c2410.c
> +++ b/drivers/i2c/busses/i2c-s3c2410.c
> @@ -104,7 +104,6 @@ enum s3c24xx_i2c_state {
> struct s3c24xx_i2c {
> wait_queue_head_t wait;
> kernel_ulong_t quirks;
> - unsigned int suspended:1;
>
> struct i2c_msg *msg;
> unsigned int msg_num;
> @@ -703,9 +702,6 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c,
> unsigned long timeout;
> int ret;
>
> - if (i2c->suspended)
> - return -EIO;
> -
> ret = s3c24xx_i2c_set_master(i2c);
> if (ret != 0) {
> dev_err(i2c->dev, "cannot get bus (error %d)\n", ret);
> @@ -1246,7 +1242,7 @@ static int s3c24xx_i2c_suspend_noirq(struct device *dev)
> {
> struct s3c24xx_i2c *i2c = dev_get_drvdata(dev);
>
> - i2c->suspended = 1;
> + i2c_mark_adapter_suspended(&i2c->adap, true);
>
> if (!IS_ERR(i2c->sysreg))
> regmap_read(i2c->sysreg, EXYNOS5_SYS_I2C_CFG,
> &i2c->sys_i2c_cfg);
> @@ -1267,7 +1263,7 @@ static int s3c24xx_i2c_resume_noirq(struct device *dev)
> return ret;
> s3c24xx_i2c_init(i2c);
> clk_disable(i2c->clk);
> - i2c->suspended = 0;
> + i2c_mark_adapter_suspended(&i2c->adap, false);
>
> return 0;
> }
Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland
