commit 0e64123141f3854e695eb4924d82b52856691466
author Olivier Deprez <olivier.deprez@arm.com> Thu Sep 23 10:07:05 2021 +0200
committer Olivier Deprez <olivier.deprez@arm.com> Tue Oct 26 16:50:53 2021 +0100
tree 9f79e140db584f9b107f4e33373a0075983df1f4
parent 98854e9675dc7d951fa9c4e10d9c9d230c54bde6

Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>

drivers/spi/spi-bitbang.c

diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c
index d84e22d..7d61a3b 100644
--- a/drivers/spi/spi-bitbang.c
+++ b/drivers/spi/spi-bitbang.c
@@ -181,6 +181,8 @@
 {
 	struct spi_bitbang_cs	*cs = spi->controller_state;
 	struct spi_bitbang	*bitbang;
+	bool			initial_setup = false;
+	int			retval;
 
 	bitbang = spi_master_get_devdata(spi->master);
 
@@ -189,22 +191,30 @@
 		if (!cs)
 			return -ENOMEM;
 		spi->controller_state = cs;
+		initial_setup = true;
 	}
 
 	/* per-word shift register access, in hardware or bitbanging */
 	cs->txrx_word = bitbang->txrx_word[spi->mode & (SPI_CPOL|SPI_CPHA)];
-	if (!cs->txrx_word)
-		return -EINVAL;
+	if (!cs->txrx_word) {
+		retval = -EINVAL;
+		goto err_free;
+	}
 
 	if (bitbang->setup_transfer) {
-		int retval = bitbang->setup_transfer(spi, NULL);
+		retval = bitbang->setup_transfer(spi, NULL);
 		if (retval < 0)
-			return retval;
+			goto err_free;
 	}
 
 	dev_dbg(&spi->dev, "%s, %u nsec/bit\n", __func__, 2 * cs->nsecs);
 
 	return 0;
+
+err_free:
+	if (initial_setup)
+		kfree(cs);
+	return retval;
 }
 EXPORT_SYMBOL_GPL(spi_bitbang_setup);