kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 99 deletions

diff --git a/target/linux/layerscape/patches-5.4/808-i2c-0006-MLK-20368-i2c-imx-Coverity-fix-divide-by-zero-warnin.patch b/target/linux/layerscape/patches-5.4/808-i2c-0006-MLK-20368-i2c-imx-Coverity-fix-divide-by-zero-warnin.patch
deleted file mode 100644
index 97f1f78230..0000000000
--- a/target/linux/layerscape/patches-5.4/808-i2c-0006-MLK-20368-i2c-imx-Coverity-fix-divide-by-zero-warnin.patch
+++ /dev/null
@@ -1,99 +0,0 @@
-From 2c2c7e16ad0401f85dd8ff9bc0789fa10e715c0e Mon Sep 17 00:00:00 2001
-From: Clark Wang <xiaoning.wang@nxp.com>
-Date: Tue, 15 Jan 2019 10:04:30 +0800
-Subject: [PATCH] MLK-20368 i2c-imx: Coverity: fix divide by zero warning
-
-"i2c_clk_rate / 2" might be zero when the i2c_clk_rate gets the clock is
-0 or 1, so add a judgment to avoid the denominator is equal to 0.
-
-Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
-[Arul: Add support to check return value everywhere in the driver]
-Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>
-
-Signed-off-by: Shrikant Bobade <Shrikant_Bobade@mentor.com>
-(cherry picked from commit d382de595bffc0975ab7c0582e08dd4f7afc0c1a)
-(cherry picked from commit 456caa9ba270ca8f4f962918a0625d1a8348f316)
----
- drivers/i2c/busses/i2c-imx.c | 31 +++++++++++++++++++++++++------
- 1 file changed, 25 insertions(+), 6 deletions(-)
-
---- a/drivers/i2c/busses/i2c-imx.c
-+++ b/drivers/i2c/busses/i2c-imx.c
-@@ -514,16 +514,24 @@ static int i2c_imx_acked(struct imx_i2c_
- 	return 0;
- }
- 
--static void i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
-+static int i2c_imx_set_clk(struct imx_i2c_struct *i2c_imx,
- 			    unsigned int i2c_clk_rate)
- {
- 	struct imx_i2c_clk_pair *i2c_clk_div = i2c_imx->hwdata->clk_div;
- 	unsigned int div;
- 	int i;
- 
--	/* Divider value calculation */
- 	if (i2c_imx->cur_clk == i2c_clk_rate)
--		return;
-+		return 0;
-+
-+	/*
-+	 * Keep the denominator of the following program
-+	 * always NOT equal to 0.
-+	 */
-+
-+	/* Divider value calculation */
-+	if (!(i2c_clk_rate / 2))
-+		return -EINVAL;
- 
- 	i2c_imx->cur_clk = i2c_clk_rate;
- 
-@@ -554,20 +562,23 @@ static void i2c_imx_set_clk(struct imx_i
- 	dev_dbg(&i2c_imx->adapter.dev, "IFDR[IC]=0x%x, REAL DIV=%d\n",
- 		i2c_clk_div[i].val, i2c_clk_div[i].div);
- #endif
-+
-+	return 0;
- }
- 
- static int i2c_imx_clk_notifier_call(struct notifier_block *nb,
- 				     unsigned long action, void *data)
- {
-+	int ret = 0;
- 	struct clk_notifier_data *ndata = data;
- 	struct imx_i2c_struct *i2c_imx = container_of(nb,
- 						      struct imx_i2c_struct,
- 						      clk_change_nb);
- 
- 	if (action & POST_RATE_CHANGE)
--		i2c_imx_set_clk(i2c_imx, ndata->new_rate);
-+		ret = i2c_imx_set_clk(i2c_imx, ndata->new_rate);
- 
--	return NOTIFY_OK;
-+	return notifier_from_errno(ret);
- }
- 
- static int i2c_imx_start(struct imx_i2c_struct *i2c_imx)
-@@ -577,6 +588,10 @@ static int i2c_imx_start(struct imx_i2c_
- 
- 	dev_dbg(&i2c_imx->adapter.dev, "<%s>\n", __func__);
- 
-+	result = i2c_imx_set_clk(i2c_imx, clk_get_rate(i2c_imx->clk));
-+	if (result)
-+		return result;
-+
- 	imx_i2c_write_reg(i2c_imx->ifdr, i2c_imx, IMX_I2C_IFDR);
- 	/* Enable I2C controller */
- 	imx_i2c_write_reg(i2c_imx->hwdata->i2sr_clr_opcode, i2c_imx, IMX_I2C_I2SR);
-@@ -1203,7 +1218,11 @@ static int i2c_imx_probe(struct platform
- 		i2c_imx->bitrate = pdata->bitrate;
- 	i2c_imx->clk_change_nb.notifier_call = i2c_imx_clk_notifier_call;
- 	clk_notifier_register(i2c_imx->clk, &i2c_imx->clk_change_nb);
--	i2c_imx_set_clk(i2c_imx, clk_get_rate(i2c_imx->clk));
-+	ret = i2c_imx_set_clk(i2c_imx, clk_get_rate(i2c_imx->clk));
-+	if (ret < 0) {
-+		dev_err(&pdev->dev, "can't get I2C clock\n");
-+		goto clk_notifier_unregister;
-+	}
- 
- 	/*
- 	 * This limit caused by an i.MX7D hardware issue(e7805 in Errata).