Merge tag 'davinci-fixes-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes

Pull "DaVinci fixes for v4.10" from Sekhar Nori:

This pull request contains fixes for the following issues

1) Fix two instances of infinite loop occurring in
   clock list for DA850. This fixes kernel hangs in some
   instances and so have been marked for stable kernel.

2) Fix for sleeping function called from atomic context
   with USB 2.0 clock management code introduced in v4.10
   merge window.

* tag 'davinci-fixes-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: da8xx: Fix sleeping function called from invalid context
  ARM: davinci: Make __clk_{enable,disable} functions public
  ARM: davinci: da850: don't add emac clock to lookup table twice
  ARM: davinci: da850: fix infinite loop in clk_set_rate()

1 files changed, 30 insertions, 2 deletions

diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c
index e770c97ea45c..1d873d15b545 100644
--- a/arch/arm/mach-davinci/da850.c
+++ b/arch/arm/mach-davinci/da850.c
@@ -319,6 +319,16 @@ static struct clk emac_clk = {
 	.gpsc		= 1,
 };
 
+/*
+ * In order to avoid adding the emac_clk to the clock lookup table twice (and
+ * screwing up the linked list in the process) create a separate clock for
+ * mdio inheriting the rate from emac_clk.
+ */
+static struct clk mdio_clk = {
+	.name		= "mdio",
+	.parent		= &emac_clk,
+};
+
 static struct clk mcasp_clk = {
 	.name		= "mcasp",
 	.parent		= &async3_clk,
@@ -367,6 +377,16 @@ static struct clk aemif_clk = {
 	.flags		= ALWAYS_ENABLED,
 };
 
+/*
+ * In order to avoid adding the aemif_clk to the clock lookup table twice (and
+ * screwing up the linked list in the process) create a separate clock for
+ * nand inheriting the rate from aemif_clk.
+ */
+static struct clk aemif_nand_clk = {
+	.name		= "nand",
+	.parent		= &aemif_clk,
+};
+
 static struct clk usb11_clk = {
 	.name		= "usb11",
 	.parent		= &pll0_sysclk4,
@@ -529,7 +549,7 @@ static struct clk_lookup da850_clks[] = {
 	CLK(NULL,		"arm",		&arm_clk),
 	CLK(NULL,		"rmii",		&rmii_clk),
 	CLK("davinci_emac.1",	NULL,		&emac_clk),
-	CLK("davinci_mdio.0",	"fck",		&emac_clk),
+	CLK("davinci_mdio.0",	"fck",		&mdio_clk),
 	CLK("davinci-mcasp.0",	NULL,		&mcasp_clk),
 	CLK("davinci-mcbsp.0",	NULL,		&mcbsp0_clk),
 	CLK("davinci-mcbsp.1",	NULL,		&mcbsp1_clk),
@@ -537,7 +557,15 @@ static struct clk_lookup da850_clks[] = {
 	CLK("da830-mmc.0",	NULL,		&mmcsd0_clk),
 	CLK("da830-mmc.1",	NULL,		&mmcsd1_clk),
 	CLK("ti-aemif",		NULL,		&aemif_clk),
-	CLK(NULL,		"aemif",	&aemif_clk),
+	/*
+	 * The only user of this clock is davinci_nand and it get's it through
+	 * con_id. The nand node itself is created from within the aemif
+	 * driver to guarantee that it's probed after the aemif timing
+	 * parameters are configured. of_dev_auxdata is not accessible from
+	 * the aemif driver and can't be passed to of_platform_populate(). For
+	 * that reason we're leaving the dev_id here as NULL.
+	 */
+	CLK(NULL,		"aemif",	&aemif_nand_clk),
 	CLK("ohci-da8xx",	"usb11",	&usb11_clk),
 	CLK("musb-da8xx",	"usb20",	&usb20_clk),
 	CLK("spi_davinci.0",	NULL,		&spi0_clk),