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Date: Mon, 18 Oct 2021 15:25:02 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>, Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Rob Clark <robdclark@...omium.org> Subject: [PATCH 5.4 64/69] drm/msm/dsi: fix off by one in dsi_bus_clk_enable error handling From: Dan Carpenter <dan.carpenter@...cle.com> commit c8f01ffc83923a91e8087aaa077de13354a7aa59 upstream. This disables a lock which wasn't enabled and it does not disable the first lock in the array. Fixes: 6e0eb52eba9e ("drm/msm/dsi: Parse bus clocks from a list") Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org> Link: https://lore.kernel.org/r/20211001123409.GG2283@kili Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org> Signed-off-by: Rob Clark <robdclark@...omium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -460,7 +460,7 @@ static int dsi_bus_clk_enable(struct msm return 0; err: - for (; i > 0; i--) + while (--i >= 0) clk_disable_unprepare(msm_host->bus_clks[i]); return ret;
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