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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: linux-efi@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H . Peter Anvin" <hpa@zytor.com>
Cc: Jan Beulich <JBeulich@suse.com>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	linux-kernel@vger.kernel.org, Jan Beulich <jbeulich@suse.com>,
	Matt Fleming <matt@codeblueprint.co.uk>
Subject: [PATCH 5/5] efi: bgrt: use efi_mem_type()
Date: Fri, 25 Aug 2017 16:50:19 +0100	[thread overview]
Message-ID: <20170825155019.6740-6-ard.biesheuvel@linaro.org> (raw)
In-Reply-To: <20170825155019.6740-1-ard.biesheuvel@linaro.org>

From: Jan Beulich <JBeulich@suse.com>

Avoid effectively open-coding the function.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 drivers/firmware/efi/efi-bgrt.c | 22 +---------------------
 1 file changed, 1 insertion(+), 21 deletions(-)

diff --git a/drivers/firmware/efi/efi-bgrt.c b/drivers/firmware/efi/efi-bgrt.c
index b58233e4ed71..50793fda7819 100644
--- a/drivers/firmware/efi/efi-bgrt.c
+++ b/drivers/firmware/efi/efi-bgrt.c
@@ -27,26 +27,6 @@ struct bmp_header {
 	u32 size;
 } __packed;
 
-static bool efi_bgrt_addr_valid(u64 addr)
-{
-	efi_memory_desc_t *md;
-
-	for_each_efi_memory_desc(md) {
-		u64 size;
-		u64 end;
-
-		if (md->type != EFI_BOOT_SERVICES_DATA)
-			continue;
-
-		size = md->num_pages << EFI_PAGE_SHIFT;
-		end = md->phys_addr + size;
-		if (addr >= md->phys_addr && addr < end)
-			return true;
-	}
-
-	return false;
-}
-
 void __init efi_bgrt_init(struct acpi_table_header *table)
 {
 	void *image;
@@ -85,7 +65,7 @@ void __init efi_bgrt_init(struct acpi_table_header *table)
 		goto out;
 	}
 
-	if (!efi_bgrt_addr_valid(bgrt->image_address)) {
+	if (efi_mem_type(bgrt->image_address) != EFI_BOOT_SERVICES_DATA) {
 		pr_notice("Ignoring BGRT: invalid image address\n");
 		goto out;
 	}
-- 
2.11.0

  parent reply	other threads:[~2017-08-25 15:59 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-25 15:50 [GIT PULL 0/5] more EFI changes for v4.14 Ard Biesheuvel
2017-08-25 15:50 ` [PATCH 1/5] efi/libstub: Enable reset attack mitigation Ard Biesheuvel
2017-08-26  7:58   ` [tip:efi/core] " tip-bot for Matthew Garrett
2017-08-25 15:50 ` [PATCH 2/5] efi/random: Increase size of firmware supplied randomness Ard Biesheuvel
2017-08-26  7:58   ` [tip:efi/core] " tip-bot for Ard Biesheuvel
2017-08-25 15:50 ` [PATCH 3/5] efi/reboot: Make function pointer orig_pm_power_off static Ard Biesheuvel
2017-08-26  7:58   ` [tip:efi/core] " tip-bot for Colin Ian King
2017-08-25 15:50 ` [PATCH 4/5] efi: move efi_mem_type() to common code Ard Biesheuvel
2017-08-26  7:59   ` [tip:efi/core] efi: Move " tip-bot for Jan Beulich
2017-08-25 15:50 ` Ard Biesheuvel [this message]
2017-08-26  7:59   ` [tip:efi/core] efi/bgrt: Use efi_mem_type() tip-bot for Jan Beulich

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