[PATCH v2] staging: axis-fifo: remove unused r_mem local variable

[Breno Rodrigues Alves <breno3011alves@gmail.com>]

Remove 'struct resource *r_mem' from axis_fifo_probe().  It is filled
in by devm_platform_get_and_ioremap_resource() but never read; pass
NULL instead.

This is v2 of a three-change series.  The debugfs_create_dir() check
was dropped because debugfs has handled ERR_PTR parents gracefully
since 2019 (thanks Greg and Dan for the correction).  The
-EINVAL -> -ENOBUFS change was dropped as well, after Dan Carpenter
noted that -EINVAL is the common errno for this path and that he
would leave the choice to the author.

Signed-off-by: Breno Rodrigues Alves <breno3011alves@gmail.com>
---
 drivers/staging/axis-fifo/axis-fifo.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
index 3d358f919..464368e04 100644
--- a/drivers/staging/axis-fifo/axis-fifo.c
+++ b/drivers/staging/axis-fifo/axis-fifo.c
@@ -428,7 +428,6 @@ static int axis_fifo_parse_dt(struct axis_fifo *fifo)
 
 static int axis_fifo_probe(struct platform_device *pdev)
 {
-	struct resource *r_mem;
 	struct device *dev = &pdev->dev;
 	struct axis_fifo *fifo = NULL;
 	int rc = 0; /* error return value */
@@ -447,7 +446,7 @@ static int axis_fifo_probe(struct platform_device *pdev)
 	mutex_init(&fifo->read_lock);
 	mutex_init(&fifo->write_lock);
 
-	fifo->base_addr = devm_platform_get_and_ioremap_resource(pdev, 0, &r_mem);
+	fifo->base_addr = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(fifo->base_addr))
 		return PTR_ERR(fifo->base_addr);
 
-- 
2.56.0