6.17-stable review patch. If anyone has any objections, please let me know.
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From: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu
[ 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 mikhail.kshevetskiy@iopsys.eu Reviewed-by: Frieder Schrempf frieder.schrempf@kontron.de Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Fixes: a403997c12019 ("spi: airoha: add SPI-NAND Flash controller driver") Link: https://patch.msgid.link/20251012121707.2296160-2-mikhail.kshevetskiy@iopsys... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/spi/spi-airoha-snfi.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/spi/spi-airoha-snfi.c b/drivers/spi/spi-airoha-snfi.c index dbe640986825e..043a03cd90a19 100644 --- a/drivers/spi/spi-airoha-snfi.c +++ b/drivers/spi/spi-airoha-snfi.c @@ -618,6 +618,10 @@ 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;