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[90.63.244.31]) by smtp.gmail.com with ESMTPSA id v65sm18451669wme.31.2019.06.24.07.48.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 24 Jun 2019 07:48:12 -0700 (PDT) From: Julien Masson To: Neil Armstrong Subject: [PATCH 1/9] drm: meson: mask value when writing bits relaxed Date: Mon, 24 Jun 2019 16:47:56 +0200 References: <86zhm782g5.fsf@baylibre.com> Message-ID: <86y31r82fo.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190624_074814_198833_6A4DD15D X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: 86zhm782g5.fsf@baylibre.com Cc: Julien Masson , linux-amlogic@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org The value used in the macro writel_bits_relaxed has to be masked since we don't want change the bits outside the mask. Signed-off-by: Julien Masson --- drivers/gpu/drm/meson/meson_registers.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h index cfaf90501bb1..c7dfbd7454e5 100644 --- a/drivers/gpu/drm/meson/meson_registers.h +++ b/drivers/gpu/drm/meson/meson_registers.h @@ -20,7 +20,7 @@ #define _REG(reg) ((reg) << 2) #define writel_bits_relaxed(mask, val, addr) \ - writel_relaxed((readl_relaxed(addr) & ~(mask)) | (val), addr) + writel_relaxed((readl_relaxed(addr) & ~(mask)) | ((val) & (mask)), addr) /* vpp2 */ #define VPP2_DUMMY_DATA 0x1900 -- 2.17.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic