From 3424a516d9d2d3fa45c63750c15ea2bba893ea81 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Thu, 15 Mar 2018 14:17:20 -0500 Subject: ARM: davinci: da8xx: fix oops in USB PHY driver due to stack allocated platform_data This fixes a possible kernel oops due to using stack allocated platform data for the USB PHY driver on DA8XX devices. If the platform device probe is deferred, then we get a corrupt pointer for the platform data. We now use a global static struct for the platform data so that the platform data pointer does not get written over. Fixes: bdec5a6b5789 ("ARM: da8xx: use platform data for CFGCHIP syscon regmap") Signed-off-by: David Lechner Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/usb-da8xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-davinci/usb-da8xx.c b/arch/arm/mach-davinci/usb-da8xx.c index 4d89d86ce7e5..50445f0e98de 100644 --- a/arch/arm/mach-davinci/usb-da8xx.c +++ b/arch/arm/mach-davinci/usb-da8xx.c @@ -26,6 +26,8 @@ static struct clk *usb20_clk; +static struct da8xx_usb_phy_platform_data da8xx_usb_phy_pdata; + static struct platform_device da8xx_usb_phy = { .name = "da8xx-usb-phy", .id = -1, @@ -36,15 +38,13 @@ static struct platform_device da8xx_usb_phy = { * registered yet. */ .init_name = "da8xx-usb-phy", + .platform_data = &da8xx_usb_phy_pdata, }, }; int __init da8xx_register_usb_phy(void) { - struct da8xx_usb_phy_platform_data pdata; - - pdata.cfgchip = da8xx_get_cfgchip(); - da8xx_usb_phy.dev.platform_data = &pdata; + da8xx_usb_phy_pdata.cfgchip = da8xx_get_cfgchip(); return platform_device_register(&da8xx_usb_phy); } -- cgit 1.4.1