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Date: Mon, 28 Dec 2020 13:46:28 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Deepak R Varma <mh12gx2825@...il.com>, Thierry Reding <treding@...dia.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.19 069/346] drm/tegra: replace idr_init() by idr_init_base() From: Deepak R Varma <mh12gx2825@...il.com> [ Upstream commit 41f71629b4c432f8dd47d70ace813be5f79d4d75 ] idr_init() uses base 0 which is an invalid identifier for this driver. The new function idr_init_base allows IDR to set the ID lookup from base 1. This avoids all lookups that otherwise starts from 0 since 0 is always unused. Signed-off-by: Deepak R Varma <mh12gx2825@...il.com> Signed-off-by: Thierry Reding <treding@...dia.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/tegra/drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index a2bd5876c6335..00808a3d67832 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -242,7 +242,7 @@ static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp) if (!fpriv) return -ENOMEM; - idr_init(&fpriv->contexts); + idr_init_base(&fpriv->contexts, 1); mutex_init(&fpriv->lock); filp->driver_priv = fpriv; -- 2.27.0
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