From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Deepak R Varma <mh12gx2825@gmail.com>,
Thierry Reding <treding@nvidia.com>,
Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org
Subject: [PATCH AUTOSEL 4.19 1/9] drm/tegra: replace idr_init() by idr_init_base()
Date: Sat, 12 Dec 2020 11:08:40 -0500 [thread overview]
Message-ID: <20201212160848.2335307-1-sashal@kernel.org> (raw)
From: Deepak R Varma <mh12gx2825@gmail.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.
References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient")
Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.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
next reply other threads:[~2020-12-12 16:24 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-12 16:08 Sasha Levin [this message]
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 2/9] kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 3/9] drm/tegra: sor: Disable clocks on error in tegra_sor_init() Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 4/9] arm64: syscall: exit userspace before unmasking exceptions Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 5/9] vxlan: Add needed_headroom for lower device Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 6/9] vxlan: Copy needed_tailroom from lowerdev Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 7/9] scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback() Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 8/9] scsi: mpt3sas: Increase IOCInit request timeout to 30s Sasha Levin
2020-12-12 16:08 ` [PATCH AUTOSEL 4.19 9/9] dm table: Remove BUG_ON(in_interrupt()) Sasha Levin
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