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Date: Wed, 4 Jun 2014 16:25:58 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Olof Johansson <olof@...om.net>, Doug Anderson <dianders@...omium.org>, Kukjin Kim <kgene.kim@...sung.com>, Wolfram Sang <wsa@...-dreams.de> Subject: [PATCH 3.10 095/103] i2c: s3c2410: resume race fix 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Olof Johansson <olof@...om.net> commit ce78cc071f5f541480e381cc0241d37590041a9d upstream. Don't unmark the device as suspended until after it's been re-setup. The main race would be w.r.t. an i2c driver that gets resumed at the same time (asyncronously), that is allowed to do a transfer since suspended is set to 0 before reinit, but really should have seen the -EIO return instead. Signed-off-by: Olof Johansson <olof@...om.net> Signed-off-by: Doug Anderson <dianders@...omium.org> Acked-by: Kukjin Kim <kgene.kim@...sung.com> Signed-off-by: Wolfram Sang <wsa@...-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/i2c/busses/i2c-s3c2410.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1204,10 +1204,10 @@ static int s3c24xx_i2c_resume(struct dev struct platform_device *pdev = to_platform_device(dev); struct s3c24xx_i2c *i2c = platform_get_drvdata(pdev); - i2c->suspended = 0; clk_prepare_enable(i2c->clk); s3c24xx_i2c_init(i2c); clk_disable_unprepare(i2c->clk); + i2c->suspended = 0; return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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