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Mon, 29 Jul 2024 13:00:52 +0200 Message-ID: <0b1ee6f7-b24d-49a6-ba90-d917c864ecf4@web.de> Date: Mon, 29 Jul 2024 13:00:47 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Alex Lanzano , Mehdi Djait , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org Cc: LKML , Christophe Jaillet , Conor Dooley , Daniel Vetter , David Airlie , Krzysztof Kozlowski , Maarten Lankhorst , Maxime Ripard , Rob Herring , Thomas Zimmermann References: <20240729014311.1746371-3-lanzano.alex@gmail.com> Subject: Re: [PATCH v3 2/2] drm/tiny: Add driver for Sharp Memory LCD Content-Language: en-GB From: Markus Elfring In-Reply-To: <20240729014311.1746371-3-lanzano.alex@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:T2t2vhWyorCOuUg8hZjreHVtdE0kgmqS3TDoCqQkVYBUBgb+rie bMWTMVfLY5cz4YHFPvMljg4leO0HJg+BRbt6dP68Q7meGKlWlgXPjJ+/m/G7bCl3i3kCnxT GrNQyuDr7pMQoAhaFwMR0WYrLBCbOdmoFg6vv/pjkWmrWb/UHFxBjigKlZw5/OMO5HpjqMz 4pcE8QHobSPkRJyntCkcA== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:HHAO4c8thIA=;/k4QbPk8lbVfZQptrBg8r44ndmH /vEEG3b3qlWT8JYi+4BZqp8tDZh/6tZrwR8hZ6cn5rNBAO7EN38dOIl34HajYgKxhwyCQhHC3 VZrSMwE6X3aDuuiMNilgteCLvV03MyGsgsbc/9rnKdMS8wrd4sC2X1MrjPCRByoY5rXSi+3v+ AIt0r/mOBvAinF0b/5C7W8z+W8NcqgBACLj9RbvMsG/U+LXjQWox7D2aBmzH1CJtWYiAxkt8J 9tnVvxViJFsf/N6AFgM5tsKZ5bMZz5iZ6dVEsnr7hRqk+BOThcz2Vbq8ozaYDUOql8h3uNsmr uN9QbGhtJl/Zr1WN4XovbxNMJ/vKsooRM1koo9XHuSkS98odADsUBIIWUcRJF1tFSlqrj45ai u476lKfZGh7Jw1ViG51K40wCxTJOJuC1dcHIdnhO78SneHbiQmneBWcRw3vFGUjepla7VOYM9 DtkS7yyS+K025XEIbGhbuc+1RJfaaXiCJtnc1ursQi8smLMqJ6ASAykGoGpRAVpJnNSHOZrpt M6cfTNbvB+sbLSQ67kAByvmQBovIAGwBHYobdPjGGie4Jhmq44DgyZHwr4EBszpSacNtG240F pbxCoyHvixZGozelXiVwcW5iwfS+bDJE/WNlbZVB8nHcepTRIwcd/HkAvtKZjW1ftHcYtL+9n wkYrTLb+Ssh0F88Gs4p9HrX8xAGeXg6dUBbItM0xjvx962w5Y9x9/taW9ljYKvtk+OBYpQF2F DPCzoFVcl/ETRd1gM4/6Te0h+waw33lR1qx+DerVrcI7FmxsFJijWUAi4MRt4oHMBKxIobX7g HK8xzmmxzQPMom7XPG+QZXcw== =E2=80=A6 > +++ b/drivers/gpu/drm/tiny/sharp-memory.c > @@ -0,0 +1,684 @@ =E2=80=A6 > static int sharp_memory_update_display(struct sharp_memory_device *smd, > + struct drm_framebuffer *fb, > + struct drm_rect clip, > + struct drm_format_conv_state *fmtcnv_state) > +{ =E2=80=A6 > + mutex_lock(&smd->tx_mutex); > + > + /* Populate the transmit buffer with frame data */ =E2=80=A6 > + mutex_unlock(&smd->tx_mutex); > + > + return ret; > +} =E2=80=A6 Under which circumstances would you become interested to apply a statement like =E2=80=9Cguard(mutex)(&smd->tx_mutex);=E2=80=9D? https://elixir.bootlin.com/linux/v6.10.2/source/include/linux/mutex.h#L196 Regards, Markus