linux-kernel - [PATCH v7 1/2] staging: axis-fifo: use u32 for fifo depth flags

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Message-ID: <20260206131148.13643-2-gustavopiazdasilva2102@gmail.com>
Date: Fri,  6 Feb 2026 10:11:47 -0300
From: Gustavo Piaz da Silva <gustavopiazdasilva2102@...il.com>
To: gregkh@...uxfoundation.org,
	dan.carpenter@...aro.org
Cc: ovidiu.panait.oss@...il.com,
	gshahrouzi@...il.com,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Gustavo Piaz da Silva <gustavopiazdasilva2102@...il.com>
Subject: [PATCH v7 1/2] staging: axis-fifo: use u32 for fifo depth flags

Update has_rx_fifo and has_tx_fifo types from int to u32 in struct
axis_fifo.

The of_property_read_u32() function expects a pointer to u32. Although
the current code works correctly with int, using u32 aligns the data
structure with the Device Tree API and prevents potential
type-mismatch issues.

Signed-off-by: Gustavo Piaz da Silva <gustavopiazdasilva2102@...il.com>
---
Changes in v7:
 - Rewrote description for better clarity and explicitly acknowledged 
   that the original code works correctly.

Changes in v6:
 - Added missing "---" line after Signed-off-by.
 - Updated subject prefix to staging: axis-fifo.

Changes in v3:
 - Split from a single patch into a two-patch series.
 
 drivers/staging/axis-fifo/axis-fifo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
index 509d620d6ce7..7bc7bf191250 100644
--- a/drivers/staging/axis-fifo/axis-fifo.c
+++ b/drivers/staging/axis-fifo/axis-fifo.c
@@ -121,8 +121,8 @@ struct axis_fifo {
 
 	unsigned int rx_fifo_depth; /* max words in the receive fifo */
 	unsigned int tx_fifo_depth; /* max words in the transmit fifo */
-	int has_rx_fifo; /* whether the IP has the rx fifo enabled */
-	int has_tx_fifo; /* whether the IP has the tx fifo enabled */
+	u32 has_rx_fifo; /* whether the IP has the rx fifo enabled */
+	u32 has_tx_fifo; /* whether the IP has the tx fifo enabled */
 
 	wait_queue_head_t read_queue; /* wait queue for asynchronos read */
 	struct mutex read_lock; /* lock for reading */
-- 
2.52.0