linux-kernel - [PATCH 3/4] spi: cadence-quadspi: Fix cqspi_setup

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Message-ID: <20250904133130.3105736-4-s-k6@ti.com>
Date: Thu, 4 Sep 2025 19:01:29 +0530
From: Santhosh Kumar K <s-k6@...com>
To: <miquel.raynal@...tlin.com>, <broonie@...nel.org>, <vigneshr@...com>,
        <marex@...x.de>, <computersforpeace@...il.com>,
        <grmoore@...nsource.altera.com>, <theo.lebrun@...tlin.com>
CC: <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <s-k6@...com>,
        <praneeth@...com>, <p-mantena@...com>, <a-dutta@...com>,
        <u-kumar1@...com>
Subject: [PATCH 3/4] spi: cadence-quadspi: Fix cqspi_setup_flash()

The 'max_cs' stores the largest chip select number. It should only
be updated when the current 'cs' is greater than existing 'max_cs'. So,
fix the condition accordingly.

Fixes: 0f3841a5e115 ("spi: cadence-qspi: report correct number of chip-select")
Signed-off-by: Santhosh Kumar K <s-k6@...com>
---
 drivers/spi/spi-cadence-quadspi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 447a32a08a93..da3ec15abb3e 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1722,7 +1722,7 @@ static const struct spi_controller_mem_caps cqspi_mem_caps = {
 
 static int cqspi_setup_flash(struct cqspi_st *cqspi)
 {
-	unsigned int max_cs = cqspi->num_chipselect - 1;
+	unsigned int max_cs = 0;
 	struct platform_device *pdev = cqspi->pdev;
 	struct device *dev = &pdev->dev;
 	struct cqspi_flash_pdata *f_pdata;
@@ -1740,7 +1740,7 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi)
 		if (cs >= cqspi->num_chipselect) {
 			dev_err(dev, "Chip select %d out of range.\n", cs);
 			return -EINVAL;
-		} else if (cs < max_cs) {
+		} else if (cs > max_cs) {
 			max_cs = cs;
 		}
 
-- 
2.34.1