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([103.170.245.236]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-29b5b2ae1c3sm102091315ad.92.2025.11.22.23.10.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 22 Nov 2025 23:10:25 -0800 (PST) From: Sidharth Seela To: claudiu.beznea@tuxon.dev, alexandre.belloni@bootlin.com, nicolas.ferre@microchip.com, sboyd@kernel.org, mturquette@baylibre.com Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, david.hunter.linux@gmail.com, skhan@linuxfoundation.org, khalid@kernel.org, Sidharth Seela Subject: [RFT PATCH v2] Use kmalloc_array() instead of kmalloc() Date: Sun, 23 Nov 2025 12:39:06 +0530 Message-ID: <20251123070905.93652-2-sidharthseela@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Refactor to new API, for cases with dynamic size calculations inside kmalloc(). Such calculations were found using grep in the sources. The patch compiles properly with multi_v7_defconfig and multi_v5_defconfig and generates object files for the following driver files. Signed-off-by: Sidharth Seela --- Changelog: v1:https://lore.kernel.org/all/20250924145552.55058-1-sidharthseela@gmail.c= om/ -refactor code and run checkpatch. -use sizeof(*ptr) not sizeof(void*). -add RFT and the how the issue was found. diff --git a/drivers/clk/at91/sam9x7.c b/drivers/clk/at91/sam9x7.c index 89868a0aeaba..01bf557034e0 100644 --- a/drivers/clk/at91/sam9x7.c +++ b/drivers/clk/at91/sam9x7.c @@ -754,9 +754,9 @@ static void __init sam9x7_pmc_setup(struct device_node = *np) if (!sam9x7_pmc) return; =20 - clk_mux_buffer =3D kmalloc(sizeof(void *) * - (ARRAY_SIZE(sam9x7_gck)), - GFP_KERNEL); + clk_mux_buffer =3D kmalloc_array(ARRAY_SIZE(sam9x7_gck), + sizeof(*clk_mux_buffer), + GFP_KERNEL); if (!clk_mux_buffer) goto err_free; =20 diff --git a/drivers/clk/at91/sama7d65.c b/drivers/clk/at91/sama7d65.c index 7dee2b160ffb..91a5615f724a 100644 --- a/drivers/clk/at91/sama7d65.c +++ b/drivers/clk/at91/sama7d65.c @@ -1127,9 +1127,9 @@ static void __init sama7d65_pmc_setup(struct device_n= ode *np) if (!sama7d65_pmc) return; =20 - alloc_mem =3D kmalloc(sizeof(void *) * - (ARRAY_SIZE(sama7d65_mckx) + ARRAY_SIZE(sama7d65_gck)), - GFP_KERNEL); + alloc_mem =3D kmalloc_array(ARRAY_SIZE(sama7d65_mckx) + ARRAY_SIZE(sama7d= 65_gck), + sizeof(*alloc_mem), + GFP_KERNEL); if (!alloc_mem) goto err_free; =20 diff --git a/drivers/clk/at91/sama7g5.c b/drivers/clk/at91/sama7g5.c index 1340c2b00619..a12381f6c068 100644 --- a/drivers/clk/at91/sama7g5.c +++ b/drivers/clk/at91/sama7g5.c @@ -1004,9 +1004,9 @@ static void __init sama7g5_pmc_setup(struct device_no= de *np) if (!sama7g5_pmc) return; =20 - alloc_mem =3D kmalloc(sizeof(void *) * - (ARRAY_SIZE(sama7g5_mckx) + ARRAY_SIZE(sama7g5_gck)), - GFP_KERNEL); + alloc_mem =3D kmalloc_array(ARRAY_SIZE(sama7g5_mckx) + ARRAY_SIZE(sama7g5= _gck), + sizeof(*alloc_mem), + GFP_KERNEL); if (!alloc_mem) goto err_free; =20 --=20 2.43.0