* [PATCH] drm/tegra: replace idr_init() by idr_init_base()
@ 2020-11-05 17:59 Deepak R Varma
2020-11-10 19:53 ` Thierry Reding
0 siblings, 1 reply; 2+ messages in thread
From: Deepak R Varma @ 2020-11-05 17:59 UTC (permalink / raw)
To: Thierry Reding, David Airlie, Daniel Vetter, Jonathan Hunter,
dri-devel, linux-tegra, linux-kernel
Cc: mh12gx2825
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>
---
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 ba9d1c3e7cac..e4baf07992a4 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -90,7 +90,7 @@ 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;
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/tegra: replace idr_init() by idr_init_base()
2020-11-05 17:59 [PATCH] drm/tegra: replace idr_init() by idr_init_base() Deepak R Varma
@ 2020-11-10 19:53 ` Thierry Reding
0 siblings, 0 replies; 2+ messages in thread
From: Thierry Reding @ 2020-11-10 19:53 UTC (permalink / raw)
To: Deepak R Varma
Cc: David Airlie, Daniel Vetter, Jonathan Hunter, dri-devel,
linux-tegra, linux-kernel
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On Thu, Nov 05, 2020 at 11:29:28PM +0530, Deepak R Varma wrote:
> 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>
> ---
> drivers/gpu/drm/tegra/drm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks.
Thierry
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2020-11-10 19:53 ` Thierry Reding
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