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([103.172.209.59]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3142a20c158sm31076333eec.29.2026.07.19.12.59.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Jul 2026 12:59:40 -0700 (PDT) From: MishraMohit21 To: Sudip Mukherjee , Teddy Wang , Greg Kroah-Hartman Cc: linux-fbdev@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, MishraMohit21 Subject: [PATCH] staging: sm750fb: select FB_IOMEM_FOPS in Kconfig Date: Mon, 20 Jul 2026 01:28:38 +0530 Message-ID: <20260719195839.24937-1-mishraloopmohit@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" The driver uses the FB_DEFAULT_IOMEM_OPS macro in sm750.c to define its framebuffer operations. This macro references core framebuffer operations fb_io_read, fb_io_write, and fb_io_mmap. These symbols are defined in fb_io_fops.c, which is compiled only under CONFIG_FB_IOMEM_FOPS. Since config FB_SM750 does not currently select FB_IOMEM_FOPS, compiling the driver on a config that has no other framebuffer drivers enabled fails with undefined symbol link errors during MODPOST. Add 'select FB_IOMEM_FOPS' to Kconfig to ensure the driver core helpers build successfully in all configurations. Keep the select statements sorted alphabetically. Signed-off-by: MishraMohit21 --- drivers/staging/sm750fb/Kconfig | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/staging/sm750fb/Kconfig b/drivers/staging/sm750fb/Kcon= fig index 08bcccdd0f1c..7d5ad423e41f 100644 --- a/drivers/staging/sm750fb/Kconfig +++ b/drivers/staging/sm750fb/Kconfig @@ -2,10 +2,11 @@ config FB_SM750 tristate "Silicon Motion SM750 framebuffer support" depends on FB && PCI && HAS_IOPORT - select FB_MODE_HELPERS - select FB_CFB_FILLRECT select FB_CFB_COPYAREA + select FB_CFB_FILLRECT select FB_CFB_IMAGEBLIT + select FB_IOMEM_FOPS + select FB_MODE_HELPERS help Frame buffer driver for the Silicon Motion SM750 chip with 2D acceleration and dual head support. --=20 2.43.0