From: Mikhail Kshevetskiy Date: Sun, 12 Oct 2025 12:16:52 +0000 (+0300) Subject: spi: airoha: return an error for continuous mode dirmap creation cases X-Git-Tag: v6.12.56~45 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f5dc5baa5b04ceb0fca2460bc2863921f0e7ede5;p=thirdparty%2Fkernel%2Fstable.git spi: airoha: return an error for continuous mode dirmap creation cases [ Upstream commit 4314ffce4eb81a6c18700af1b6e29b6e0c6b9e37 ] This driver can accelerate single page operations only, thus continuous reading mode should not be used. Continuous reading will use sizes up to the size of one erase block. This size is much larger than the size of single flash page. Use this difference to identify continuous reading and return an error. Signed-off-by: Mikhail Kshevetskiy Reviewed-by: Frieder Schrempf Reviewed-by: AngeloGioacchino Del Regno Fixes: a403997c12019 ("spi: airoha: add SPI-NAND Flash controller driver") Link: https://patch.msgid.link/20251012121707.2296160-2-mikhail.kshevetskiy@iopsys.eu Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- diff --git a/drivers/spi/spi-airoha-snfi.c b/drivers/spi/spi-airoha-snfi.c index 1369691a997b..6930dea48f33 100644 --- a/drivers/spi/spi-airoha-snfi.c +++ b/drivers/spi/spi-airoha-snfi.c @@ -625,6 +625,10 @@ static int airoha_snand_dirmap_create(struct spi_mem_dirmap_desc *desc) if (desc->info.offset + desc->info.length > U32_MAX) return -EINVAL; + /* continuous reading is not supported */ + if (desc->info.length > SPI_NAND_CACHE_SIZE) + return -E2BIG; + if (!airoha_snand_supports_op(desc->mem, &desc->info.op_tmpl)) return -EOPNOTSUPP;