| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <f044e2b1-be0b-ba59-c4fe-5a56db9fa858@ti.com>
Date: Fri, 22 Nov 2024 13:39:32 +0530
From: Devarsh Thakkar <devarsht@...com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
Jyri Sarha
<jyri.sarha@....fi>
CC: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard
<mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie
<airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
Jonathan
Cormier <jcormier@...ticallink.com>
Subject: Re: [PATCH 7/7] drm/tidss: Rename 'wait_lock' to 'irq_lock'
On 21/10/24 19:37, Tomi Valkeinen wrote:
> The 'wait_lock' name seems to be a copy-paste from omapdrm, and makes no
> sense here. Rename it to 'irq_lock'. Also clarify the related comment to
> make it clear what it protects, and drop any comments related to
> 'wait_list' which doesn't exist in tidss.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Reviewed-by: Devarsh Thakkar <devarsht@...com>
Regards
Devarsh
> ---
> drivers/gpu/drm/tidss/tidss_dispc.c | 4 ++--
> drivers/gpu/drm/tidss/tidss_drv.c | 2 +-
> drivers/gpu/drm/tidss/tidss_drv.h | 5 +++--
> drivers/gpu/drm/tidss/tidss_irq.c | 19 +++++++++----------
> 4 files changed, 15 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c
> index 07f5c26cfa26..cacb5f3d8085 100644
> --- a/drivers/gpu/drm/tidss/tidss_dispc.c
> +++ b/drivers/gpu/drm/tidss/tidss_dispc.c
> @@ -2769,10 +2769,10 @@ static void dispc_softreset_k2g(struct dispc_device *dispc)
> {
> unsigned long flags;
>
> - spin_lock_irqsave(&dispc->tidss->wait_lock, flags);
> + spin_lock_irqsave(&dispc->tidss->irq_lock, flags);
> dispc_set_irqenable(dispc, 0);
> dispc_read_and_clear_irqstatus(dispc);
> - spin_unlock_irqrestore(&dispc->tidss->wait_lock, flags);
> + spin_unlock_irqrestore(&dispc->tidss->irq_lock, flags);
>
> for (unsigned int vp_idx = 0; vp_idx < dispc->feat->num_vps; ++vp_idx)
> VP_REG_FLD_MOD(dispc, vp_idx, DISPC_VP_CONTROL, 0, 0, 0);
> diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
> index d15f836dca95..c7de8c9fa12e 100644
> --- a/drivers/gpu/drm/tidss/tidss_drv.c
> +++ b/drivers/gpu/drm/tidss/tidss_drv.c
> @@ -138,7 +138,7 @@ static int tidss_probe(struct platform_device *pdev)
>
> platform_set_drvdata(pdev, tidss);
>
> - spin_lock_init(&tidss->wait_lock);
> + spin_lock_init(&tidss->irq_lock);
>
> ret = dispc_init(tidss);
> if (ret) {
> diff --git a/drivers/gpu/drm/tidss/tidss_drv.h b/drivers/gpu/drm/tidss/tidss_drv.h
> index d7f27b0b0315..7f4f4282bc04 100644
> --- a/drivers/gpu/drm/tidss/tidss_drv.h
> +++ b/drivers/gpu/drm/tidss/tidss_drv.h
> @@ -29,8 +29,9 @@ struct tidss_device {
>
> unsigned int irq;
>
> - spinlock_t wait_lock; /* protects the irq masks */
> - dispc_irq_t irq_mask; /* enabled irqs in addition to wait_list */
> + /* protects the irq masks field and irqenable/irqstatus registers */
> + spinlock_t irq_lock;
> + dispc_irq_t irq_mask; /* enabled irqs */
> };
>
> #define to_tidss(__dev) container_of(__dev, struct tidss_device, ddev)
> diff --git a/drivers/gpu/drm/tidss/tidss_irq.c b/drivers/gpu/drm/tidss/tidss_irq.c
> index 8af4682ba56b..5abc788781f4 100644
> --- a/drivers/gpu/drm/tidss/tidss_irq.c
> +++ b/drivers/gpu/drm/tidss/tidss_irq.c
> @@ -15,10 +15,9 @@
> #include "tidss_irq.h"
> #include "tidss_plane.h"
>
> -/* call with wait_lock and dispc runtime held */
> static void tidss_irq_update(struct tidss_device *tidss)
> {
> - assert_spin_locked(&tidss->wait_lock);
> + assert_spin_locked(&tidss->irq_lock);
>
> dispc_set_irqenable(tidss->dispc, tidss->irq_mask);
> }
> @@ -31,11 +30,11 @@ void tidss_irq_enable_vblank(struct drm_crtc *crtc)
> u32 hw_videoport = tcrtc->hw_videoport;
> unsigned long flags;
>
> - spin_lock_irqsave(&tidss->wait_lock, flags);
> + spin_lock_irqsave(&tidss->irq_lock, flags);
> tidss->irq_mask |= DSS_IRQ_VP_VSYNC_EVEN(hw_videoport) |
> DSS_IRQ_VP_VSYNC_ODD(hw_videoport);
> tidss_irq_update(tidss);
> - spin_unlock_irqrestore(&tidss->wait_lock, flags);
> + spin_unlock_irqrestore(&tidss->irq_lock, flags);
> }
>
> void tidss_irq_disable_vblank(struct drm_crtc *crtc)
> @@ -46,11 +45,11 @@ void tidss_irq_disable_vblank(struct drm_crtc *crtc)
> u32 hw_videoport = tcrtc->hw_videoport;
> unsigned long flags;
>
> - spin_lock_irqsave(&tidss->wait_lock, flags);
> + spin_lock_irqsave(&tidss->irq_lock, flags);
> tidss->irq_mask &= ~(DSS_IRQ_VP_VSYNC_EVEN(hw_videoport) |
> DSS_IRQ_VP_VSYNC_ODD(hw_videoport));
> tidss_irq_update(tidss);
> - spin_unlock_irqrestore(&tidss->wait_lock, flags);
> + spin_unlock_irqrestore(&tidss->irq_lock, flags);
> }
>
> static irqreturn_t tidss_irq_handler(int irq, void *arg)
> @@ -60,9 +59,9 @@ static irqreturn_t tidss_irq_handler(int irq, void *arg)
> unsigned int id;
> dispc_irq_t irqstatus;
>
> - spin_lock(&tidss->wait_lock);
> + spin_lock(&tidss->irq_lock);
> irqstatus = dispc_read_and_clear_irqstatus(tidss->dispc);
> - spin_unlock(&tidss->wait_lock);
> + spin_unlock(&tidss->irq_lock);
>
> for (id = 0; id < tidss->num_crtcs; id++) {
> struct drm_crtc *crtc = tidss->crtcs[id];
> @@ -95,9 +94,9 @@ void tidss_irq_resume(struct tidss_device *tidss)
> {
> unsigned long flags;
>
> - spin_lock_irqsave(&tidss->wait_lock, flags);
> + spin_lock_irqsave(&tidss->irq_lock, flags);
> tidss_irq_update(tidss);
> - spin_unlock_irqrestore(&tidss->wait_lock, flags);
> + spin_unlock_irqrestore(&tidss->irq_lock, flags);
> }
>
> int tidss_irq_install(struct drm_device *ddev, unsigned int irq)
>
Powered by blists - more mailing lists