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openwrt/target/linux/airoha/patches-6.12/029-02-spi-airoha-remove-unnecessary-restriction-length.patch
Mikhail Kshevetskiy 5ff0e70930 airoha: spi: snfi driver fixes & improvements
This patch series greatly improve airoha snfi driver and fix a
number of serious bugs.

Fixed bugs:
 * Fix reading/writing of flashes with more than one plane per lun
 * Fill the buffer with 0xff before writing
 * Fix reading of flashes supporting continuous reading mode
 * Fix error paths

Improvements:
 * Add support of dual/quad wires spi modes in exec_op(). This also
   fix flash reading/writing if dirmap can't be created.
 * Support of dualio/quadio flash reading commands

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Link: https://github.com/openwrt/openwrt/pull/20295
Signed-off-by: Robert Marko <robimarko@gmail.com>
2025-10-09 16:37:25 +02:00

32 lines
1.0 KiB
Diff

From 4658f57ba7f60c3bd8e14c1ca7acf2090aee8436 Mon Sep 17 00:00:00 2001
From: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Date: Tue, 12 Aug 2025 06:21:35 +0300
Subject: [PATCH v6 02/13] spi: airoha: remove unnecessary restriction length
The "length < 160" restriction is not needed because airoha_snand_write_data()
and airoha_snand_read_data() will properly handle data transfers above
SPI_MAX_TRANSFER_SIZE.
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
drivers/spi/spi-airoha-snfi.c | 7 -------
1 file changed, 7 deletions(-)
--- a/drivers/spi/spi-airoha-snfi.c
+++ b/drivers/spi/spi-airoha-snfi.c
@@ -579,13 +579,6 @@ static int airoha_snand_adjust_op_size(s
if (op->data.nbytes > max_len)
op->data.nbytes = max_len;
- } else {
- max_len = 1 + op->addr.nbytes + op->dummy.nbytes;
- if (max_len >= 160)
- return -EOPNOTSUPP;
-
- if (op->data.nbytes > 160 - max_len)
- op->data.nbytes = 160 - max_len;
}
return 0;