spi-dw-core.c: Fix error checking for debugfs_create_dir

This patch fixes the error checking in spi-dw-core.c in
debugfs_create_dir. The DebugFS kernel API is developed in
a way that the caller can safely ignore the errors that
occur during the creation of DebugFS nodes.

Signed-off-by: Osama Muhammad <osmtendev@gmail.com>
Link: https://lore.kernel.org/r/20230520224025.14928-1-osmtendev@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
index 7778b19..071a760 100644 (file)
--- a/drivers/spi/spi-dw-core.c
+++ b/drivers/spi/spi-dw-core.c
@@ -57,21 +57,18 @@ static const struct debugfs_reg32 dw_spi_dbgfs_regs[] = {
        DW_SPI_DBGFS_REG("RX_SAMPLE_DLY", DW_SPI_RX_SAMPLE_DLY),
 };
 
-static int dw_spi_debugfs_init(struct dw_spi *dws)
+static void dw_spi_debugfs_init(struct dw_spi *dws)
 {
        char name[32];
 
        snprintf(name, 32, "dw_spi%d", dws->master->bus_num);
        dws->debugfs = debugfs_create_dir(name, NULL);
-       if (!dws->debugfs)
-               return -ENOMEM;
 
        dws->regset.regs = dw_spi_dbgfs_regs;
        dws->regset.nregs = ARRAY_SIZE(dw_spi_dbgfs_regs);
        dws->regset.base = dws->regs;
        debugfs_create_regset32("registers", 0400, dws->debugfs, &dws->regset);
 
-       return 0;
 }
 
 static void dw_spi_debugfs_remove(struct dw_spi *dws)
@@ -80,9 +77,8 @@ static void dw_spi_debugfs_remove(struct dw_spi *dws)
 }
 
 #else
-static inline int dw_spi_debugfs_init(struct dw_spi *dws)
+static inline void dw_spi_debugfs_init(struct dw_spi *dws)
 {
-       return 0;
 }
 
 static inline void dw_spi_debugfs_remove(struct dw_spi *dws)