Replace usage of global screen_info with local pointers. This will later reduce churn when screen_info is being moved.
Signed-off-by: Thomas Zimmermann <[email protected]> --- drivers/firmware/efi/earlycon.c | 40 ++++++++++++++++----------------- 1 file changed, 20 insertions(+), 20 deletions(-) diff --git a/drivers/firmware/efi/earlycon.c b/drivers/firmware/efi/earlycon.c index d18a1a5de144..fac3a295c57f 100644 --- a/drivers/firmware/efi/earlycon.c +++ b/drivers/firmware/efi/earlycon.c @@ -32,12 +32,13 @@ static void *efi_fb; */ static int __init efi_earlycon_remap_fb(void) { + const struct screen_info *si = &screen_info; + /* bail if there is no bootconsole or it was unregistered already */ if (!earlycon_console || !console_is_registered(earlycon_console)) return 0; - efi_fb = memremap(fb_base, screen_info.lfb_size, - fb_wb ? MEMREMAP_WB : MEMREMAP_WC); + efi_fb = memremap(fb_base, si->lfb_size, fb_wb ? MEMREMAP_WB : MEMREMAP_WC); return efi_fb ? 0 : -ENOMEM; } @@ -71,12 +72,12 @@ static __ref void efi_earlycon_unmap(void *addr, unsigned long len) early_memunmap(addr, len); } -static void efi_earlycon_clear_scanline(unsigned int y) +static void efi_earlycon_clear_scanline(unsigned int y, const struct screen_info *si) { unsigned long *dst; u16 len; - len = screen_info.lfb_linelength; + len = si->lfb_linelength; dst = efi_earlycon_map(y*len, len); if (!dst) return; @@ -85,7 +86,7 @@ static void efi_earlycon_clear_scanline(unsigned int y) efi_earlycon_unmap(dst, len); } -static void efi_earlycon_scroll_up(void) +static void efi_earlycon_scroll_up(const struct screen_info *si) { unsigned long *dst, *src; u16 maxlen = 0; @@ -99,8 +100,8 @@ static void efi_earlycon_scroll_up(void) } maxlen *= 4; - len = screen_info.lfb_linelength; - height = screen_info.lfb_height; + len = si->lfb_linelength; + height = si->lfb_height; for (i = 0; i < height - font->height; i++) { dst = efi_earlycon_map(i*len, len); @@ -120,7 +121,8 @@ static void efi_earlycon_scroll_up(void) } } -static void efi_earlycon_write_char(u32 *dst, unsigned char c, unsigned int h) +static void efi_earlycon_write_char(u32 *dst, unsigned char c, unsigned int h, + const struct screen_info *si) { const u32 color_black = 0x00000000; const u32 color_white = 0x00ffffff; @@ -145,13 +147,12 @@ static void efi_earlycon_write_char(u32 *dst, unsigned char c, unsigned int h) static void efi_earlycon_write(struct console *con, const char *str, unsigned int num) { - struct screen_info *si; + const struct screen_info *si = &screen_info; u32 cur_efi_x = efi_x; unsigned int len; const char *s; void *dst; - si = &screen_info; len = si->lfb_linelength; while (num) { @@ -174,7 +175,7 @@ efi_earlycon_write(struct console *con, const char *str, unsigned int num) x = efi_x; while (n-- > 0) { - efi_earlycon_write_char(dst + x*4, *s, h); + efi_earlycon_write_char(dst + x*4, *s, h, si); x += font->width; s++; } @@ -207,10 +208,10 @@ efi_earlycon_write(struct console *con, const char *str, unsigned int num) cur_line_y = (cur_line_y + 1) % max_line_y; efi_y -= font->height; - efi_earlycon_scroll_up(); + efi_earlycon_scroll_up(si); for (i = 0; i < font->height; i++) - efi_earlycon_clear_scanline(efi_y + i); + efi_earlycon_clear_scanline(efi_y + i, si); } } } @@ -226,22 +227,21 @@ void __init efi_earlycon_reprobe(void) static int __init efi_earlycon_setup(struct earlycon_device *device, const char *opt) { - struct screen_info *si; + const struct screen_info *si = &screen_info; u16 xres, yres; u32 i; fb_wb = opt && !strcmp(opt, "ram"); - if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) { + if (si->orig_video_isVGA != VIDEO_TYPE_EFI) { fb_probed = true; return -ENODEV; } - fb_base = screen_info.lfb_base; - if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) - fb_base |= (u64)screen_info.ext_lfb_base << 32; + fb_base = si->lfb_base; + if (si->capabilities & VIDEO_CAPABILITY_64BIT_BASE) + fb_base |= (u64)si->ext_lfb_base << 32; - si = &screen_info; xres = si->lfb_width; yres = si->lfb_height; @@ -266,7 +266,7 @@ static int __init efi_earlycon_setup(struct earlycon_device *device, efi_y -= font->height; for (i = 0; i < (yres - efi_y) / font->height; i++) - efi_earlycon_scroll_up(); + efi_earlycon_scroll_up(si); device->con->write = efi_earlycon_write; earlycon_console = device->con; -- 2.51.1
