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Date: Mon, 13 Nov 2006 11:43:45 +0200 From: "Myaskouvskey, Artiom" <artiom.myaskouvskey@...el.com> To: <davej@...emonkey.org.uk>, <hpa@...or.com> Cc: <linux-kernel@...r.kernel.org>, "Satt, Shai" <shai.satt@...el.com> Subject: [PATCH 2.6.19-rc5-git2] EFI: calling efi_get_time during suspend From: Artiom Myaskouvskey <artiom.myaskouvskey@...el.com> Function efi_get_time called not only during init kernel phase but also during suspend (from get_cmos_time). When it is called from get_cmos_time the corresponding runtime service should be called in virtual and not in physical mode. Signed-off-by: Artiom Myaskouvskey <artiom.myaskouvskey@...el.com> --- diff -uprN linux-2.6.19-rc5-git2.orig/include/linux/efi.h linux-2.6.19-rc5-git2/include/linux/efi.h --- linux-2.6.19-rc5-git2.orig/include/linux/efi.h 2006-11-13 11:15:19.000000000 +0200 +++ linux-2.6.19-rc5-git2/include/linux/efi.h 2006-11-13 11:15:38.000000000 +0200 @@ -300,7 +300,7 @@ extern int efi_mem_attribute_range (unsi extern int __init efi_uart_console_only (void); extern void efi_initialize_iomem_resources(struct resource *code_resource, struct resource *data_resource); -extern unsigned long __init efi_get_time(void); +extern unsigned long efi_get_time(void); extern int __init efi_set_rtc_mmss(unsigned long nowtime); extern struct efi_memory_map memmap; diff -uprN linux-2.6.19-rc5-git2.orig/arch/i386/kernel/efi.c linux-2.6.19-rc5-git2/arch/i386/kernel/efi.c --- linux-2.6.19-rc5-git2.orig/arch/i386/kernel/efi.c 2006-11-13 11:15:17.000000000 +0200 +++ linux-2.6.19-rc5-git2/arch/i386/kernel/efi.c 2006-11-13 11:15:38.000000000 +0200 @@ -194,17 +194,25 @@ inline int efi_set_rtc_mmss(unsigned lon return 0; } /* - * This should only be used during kernel init and before runtime - * services have been remapped, therefore, we'll need to call in physical - * mode. Note, this call isn't used later, so mark it __init. + * This is used during kernel init before runtime + * services have been remapped and also during suspend, therefore, + * we'll need to call both in physical and virtual modes. */ -inline unsigned long __init efi_get_time(void) +inline unsigned long efi_get_time(void) { efi_status_t status; efi_time_t eft; efi_time_cap_t cap; - status = phys_efi_get_time(&eft, &cap); + if (efi.get_time) { + /* if we are in virtual mode use remapped function */ + status = efi.get_time(&eft, &cap); + } + else { + /* we are in physical mode */ + status = phys_efi_get_time(&eft, &cap); + } + if (status != EFI_SUCCESS) printk("Oops: efitime: can't read time status: 0x%lx\n",status); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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