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Tue, 10 Mar 2026 17:38:01 -0700 (PDT) Received: from ryzen ([2601:644:8000:56f5::8bd]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2aeae222e2fsm5118555ad.2.2026.03.10.17.38.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 17:38:01 -0700 (PDT) From: Rosen Penev To: linux-kernel@vger.kernel.org Cc: Jassi Brar , Heiko Stuebner , linux-arm-kernel@lists.infradead.org (moderated list:ARM/Rockchip SoC support), linux-rockchip@lists.infradead.org (open list:ARM/Rockchip SoC support) Subject: [PATCH] mailbox: rockchip: kzalloc + kcalloc to kzalloc Date: Tue, 10 Mar 2026 17:37:44 -0700 Message-ID: <20260311003744.32099-1-rosenp@gmail.com> X-Mailer: git-send-email 2.53.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260310_173803_317578_9F65D9E3 X-CRM114-Status: GOOD ( 11.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use a flexible array member to reduce allocations. Signed-off-by: Rosen Penev --- drivers/mailbox/rockchip-mailbox.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/mailbox/rockchip-mailbox.c b/drivers/mailbox/rockchip-mailbox.c index 4d966cb2ed03..a1a7dee64356 100644 --- a/drivers/mailbox/rockchip-mailbox.c +++ b/drivers/mailbox/rockchip-mailbox.c @@ -46,7 +46,7 @@ struct rockchip_mbox { /* The maximum size of buf for each channel */ u32 buf_size; - struct rockchip_mbox_chan *chans; + struct rockchip_mbox_chan chans[]; }; static int rockchip_mbox_send_data(struct mbox_chan *chan, void *data) @@ -173,15 +173,10 @@ static int rockchip_mbox_probe(struct platform_device *pdev) drv_data = (const struct rockchip_mbox_data *) device_get_match_data(&pdev->dev); - mb = devm_kzalloc(&pdev->dev, sizeof(*mb), GFP_KERNEL); + mb = devm_kzalloc(&pdev->dev, struct_size(mb, chans, drv_data->num_chans), GFP_KERNEL); if (!mb) return -ENOMEM; - mb->chans = devm_kcalloc(&pdev->dev, drv_data->num_chans, - sizeof(*mb->chans), GFP_KERNEL); - if (!mb->chans) - return -ENOMEM; - mb->mbox.chans = devm_kcalloc(&pdev->dev, drv_data->num_chans, sizeof(*mb->mbox.chans), GFP_KERNEL); if (!mb->mbox.chans) -- 2.53.0