From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Liu Xiang , Boris Brezillon Subject: [PATCH 4.19 006/361] mtd: spi-nor: fsl-quadspi: fix read error for flash size larger than 16MB Date: Sun, 11 Nov 2018 14:15:53 -0800 Message-Id: <20181111221620.907362168@linuxfoundation.org> In-Reply-To: <20181111221619.915519183@linuxfoundation.org> References: <20181111221619.915519183@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Liu Xiang commit 41fe242979e463d6ad251077ded01b825a330b7e upstream. If the size of spi-nor flash is larger than 16MB, the read_opcode is set to SPINOR_OP_READ_1_1_4_4B, and fsl_qspi_get_seqid() will return -EINVAL when cmd is SPINOR_OP_READ_1_1_4_4B. This can cause read operation fail. Fixes: e46ecda764dc ("mtd: spi-nor: Add Freescale QuadSPI driver") Cc: Signed-off-by: Liu Xiang Signed-off-by: Boris Brezillon Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/spi-nor/fsl-quadspi.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -478,6 +478,7 @@ static int fsl_qspi_get_seqid(struct fsl { switch (cmd) { case SPINOR_OP_READ_1_1_4: + case SPINOR_OP_READ_1_1_4_4B: return SEQID_READ; case SPINOR_OP_WREN: return SEQID_WREN;