litmus-rt.git - The LITMUS^RT kernel.

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author	Al Viro <viro@zeniv.linux.org.uk>	2014-10-23 22:56:05 -0400
committer	Al Viro <viro@zeniv.linux.org.uk>	2014-10-24 20:24:11 -0400
commit	3d268c9b136f51385f9d041f3f2424501b257388 (patch)
tree	f2dcbda16c82c4215ccf104915e9541e1c785b85 /include/linux/buffer_head.h
parent	1be47b387a717a1d3edf29c80b6e7f3a72ab236e (diff)

overlayfs: don't hold ->i_mutex over opening the real directory

just use it to serialize the assignment Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Diffstat (limited to 'include/linux/buffer_head.h')

0 files changed, 0 insertions, 0 deletions

/* * Copyright 2012 Freescale Semiconductor, Inc. * Copyright 2012 Linaro Ltd. * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include <linux/clk.h> #include <linux/clkdev.h> #include <linux/err.h> #include <linux/init.h> #include <linux/init.h> #include <linux/irqdomain.h> #include <linux/micrel_phy.h> #include <linux/mxsfb.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/phy.h> #include <asm/mach/arch.h> #include <asm/mach/time.h> #include <mach/common.h> static struct fb_videomode mx23evk_video_modes[] = { { .name = "Samsung-LMS430HF02", .refresh = 60, .xres = 480, .yres = 272, .pixclock = 108096, /* picosecond (9.2 MHz) */ .left_margin = 15, .right_margin = 8, .upper_margin = 12, .lower_margin = 4, .hsync_len = 1, .vsync_len = 1, .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT | FB_SYNC_DOTCLK_FAILING_ACT, }, }; static struct fb_videomode mx28evk_video_modes[] = { { .name = "Seiko-43WVF1G", .refresh = 60, .xres = 800, .yres = 480, .pixclock = 29851, /* picosecond (33.5 MHz) */ .left_margin = 89, .right_margin = 164, .upper_margin = 23, .lower_margin = 10, .hsync_len = 10, .vsync_len = 10, .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT | FB_SYNC_DOTCLK_FAILING_ACT, }, }; static struct fb_videomode m28evk_video_modes[] = { { .name = "Ampire AM-800480R2TMQW-T01H", .refresh = 60, .xres = 800, .yres = 480, .pixclock = 30066, /* picosecond (33.26 MHz) */ .left_margin = 0, .right_margin = 256, .upper_margin = 0, .lower_margin = 45, .hsync_len = 1, .vsync_len = 1, .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT, }, }; static struct fb_videomode apx4devkit_video_modes[] = { { .name = "HannStar PJ70112A", .refresh = 60, .xres = 800, .yres = 480, .pixclock = 33333, /* picosecond (30.00 MHz) */ .left_margin = 88, .right_margin = 40, .upper_margin = 32, .lower_margin = 13, .hsync_len = 48, .vsync_len = 3, .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT | FB_SYNC_DATA_ENABLE_HIGH_ACT | FB_SYNC_DOTCLK_FAILING_ACT, }, }; static struct mxsfb_platform_data mxsfb_pdata __initdata; static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata), OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata), { /* sentinel */ } }; static int __init mxs_icoll_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL); return 0; } static int __init mxs_gpio_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { static int gpio_irq_base = MXS_GPIO_IRQ_START; irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL); gpio_irq_base += 32; return 0; } static const struct of_device_id mxs_irq_match[] __initconst = { { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, }, { .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, }, { /* sentinel */ } }; static void __init mxs_dt_init_irq(void) { icoll_init_irq(); of_irq_init(mxs_irq_match); } static void __init imx23_timer_init(void) { mx23_clocks_init(); } static struct sys_timer imx23_timer = { .init = imx23_timer_init, }; static void __init imx28_timer_init(void) { mx28_clocks_init(); } static struct sys_timer imx28_timer = { .init = imx28_timer_init, }; enum mac_oui { OUI_FSL, OUI_DENX, }; static void __init update_fec_mac_prop(enum mac_oui oui) { struct device_node *np, *from = NULL; struct property *newmac; const u32 *ocotp = mxs_get_ocotp(); u8 *macaddr; u32 val; int i; for (i = 0; i < 2; i++) { np = of_find_compatible_node(from, NULL, "fsl,imx28-fec"); if (!np) return; from = np; newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL); if (!newmac) return; newmac->value = newmac + 1; newmac->length = 6; newmac->name = kstrdup("local-mac-address", GFP_KERNEL); if (!newmac->name) { kfree(newmac); return; } /* * OCOTP only stores the last 4 octets for each mac address, * so hard-code OUI here. */ macaddr = newmac->value; switch (oui) { case OUI_FSL: macaddr[0] = 0x00; macaddr[1] = 0x04; macaddr[2] = 0x9f; break; case OUI_DENX: macaddr[0] = 0xc0; macaddr[1] = 0xe5; macaddr[2] = 0x4e; break; } val = ocotp[i]; macaddr[3] = (val >> 16) & 0xff; macaddr[4] = (val >> 8) & 0xff; macaddr[5] = (val >> 0) & 0xff; prom_update_property(np, newmac); } } static void __init imx23_evk_init(void) { mxsfb_pdata.mode_list = mx23evk_video_modes; mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; } static inline void enable_clk_enet_out(void) { struct clk *clk = clk_get_sys("enet_out", NULL); if (!IS_ERR(clk)) clk_prepare_enable(clk); } static void __init imx28_evk_init(void) { enable_clk_enet_out(); update_fec_mac_prop(OUI_FSL); mxsfb_pdata.mode_list = mx28evk_video_modes; mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; } static void __init m28evk_init(void) { enable_clk_enet_out(); update_fec_mac_prop(OUI_DENX); mxsfb_pdata.mode_list = m28evk_video_modes; mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes); mxsfb_pdata.default_bpp = 16; mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT; } static int apx4devkit_phy_fixup(struct phy_device *phy) { phy->dev_flags |= MICREL_PHY_50MHZ_CLK; return 0; } static void __init apx4devkit_init(void) { enable_clk_enet_out(); if (IS_BUILTIN(CONFIG_PHYLIB)) phy_register_fixup_for_uid(PHY_ID_KS8051, MICREL_PHY_ID_MASK, apx4devkit_phy_fixup); mxsfb_pdata.mode_list = apx4devkit_video_modes; mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; } static void __init mxs_machine_init(void) { if (of_machine_is_compatible("fsl,imx28-evk")) imx28_evk_init(); else if (of_machine_is_compatible("fsl,imx23-evk")) imx23_evk_init(); else if (of_machine_is_compatible("denx,m28evk")) m28evk_init(); else if (of_machine_is_compatible("bluegiga,apx4devkit")) apx4devkit_init(); of_platform_populate(NULL, of_default_bus_match_table, mxs_auxdata_lookup, NULL); } static const char *imx23_dt_compat[] __initdata = { "fsl,imx23-evk", "fsl,stmp378x_devb" "olimex,imx23-olinuxino", "fsl,imx23", NULL, }; static const char *imx28_dt_compat[] __initdata = { "bluegiga,apx4devkit", "crystalfontz,cfa10036", "denx,m28evk", "fsl,imx28-evk", "karo,tx28", "fsl,imx28", NULL, }; DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)") .map_io = mx23_map_io, .init_irq = mxs_dt_init_irq, .timer = &imx23_timer, .init_machine = mxs_machine_init, .dt_compat = imx23_dt_compat, .restart = mxs_restart, MACHINE_END DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)") .map_io = mx28_map_io, .init_irq = mxs_dt_init_irq, .timer = &imx28_timer, .init_machine = mxs_machine_init, .dt_compat = imx28_dt_compat, .restart = mxs_restart, MACHINE_END


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