From: Phil Reid <preid@electromag.com.au>
Date: Thu, 22 Dec 2016 09:18:12 +0000 (+0800)
Subject: spi: dw: Make debugfs name unique between instances
X-Git-Tag: v4.14-rc1~1492^2~3^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=13288bdf4adbaa6bd1267f10044c1bc25d90ce7f;p=platform%2Fkernel%2Flinux-rpi.git

spi: dw: Make debugfs name unique between instances

Some system have multiple dw devices. Currently the driver uses a
fixed name for the debugfs dir. Append dev name to the debugfs dir
name to make it unique.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index b715a26..054012f 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -107,7 +107,10 @@ static const struct file_operations dw_spi_regs_ops = {
 
 static int dw_spi_debugfs_init(struct dw_spi *dws)
 {
-	dws->debugfs = debugfs_create_dir("dw_spi", NULL);
+	char name[128];
+
+	snprintf(name, 128, "dw_spi-%s", dev_name(&dws->master->dev));
+	dws->debugfs = debugfs_create_dir(name, NULL);
 	if (!dws->debugfs)
 		return -ENOMEM;