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Revert "test_firmware: Test platform fw loading on non-EFI systems"

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This reverts commit 18efb2f9e8 as it is
reported to break the build:
	https://lore.kernel.org/r/20200909154709.619fe9bb@canb.auug.org.au

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 18efb2f9e8 ("test_firmware: Test platform fw loading on non-EFI systems")
Cc: stable@vger.kernel.org
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Scott Branden <scott.branden@broadcom.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200909154709.619fe9bb@canb.auug.org.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2020-09-09 09:25:33 +02:00
parent 750628c79b
commit 7c69898b86
4 changed files with 18 additions and 42 deletions
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21
drivers/firmware/efi/embedded-firmware.c
View File

@ -14,22 +14,11 @@
#include <linux/vmalloc.h>
#include <crypto/sha.h>
#include "embedded-firmware.h"
#ifdef CONFIG_TEST_FIRMWARE
# define EFI_EMBEDDED_FW_VISIBILITY
#else
# define EFI_EMBEDDED_FW_VISIBILITY static
#endif
EFI_EMBEDDED_FW_VISIBILITY LIST_HEAD(efi_embedded_fw_list);
EFI_EMBEDDED_FW_VISIBILITY bool efi_embedded_fw_checked;
/* Exported for use by lib/test_firmware.c only */
#ifdef CONFIG_TEST_FIRMWARE
LIST_HEAD(efi_embedded_fw_list);
EXPORT_SYMBOL_GPL(efi_embedded_fw_list);
EXPORT_SYMBOL_GPL(efi_embedded_fw_checked);
#endif
static bool checked_for_fw;
static const struct dmi_system_id * const embedded_fw_table[] = {
#ifdef CONFIG_TOUCHSCREEN_DMI
@ -127,14 +116,14 @@ void __init efi_check_for_embedded_firmwares(void)
}
}
efi_embedded_fw_checked = true;
checked_for_fw = true;
}
int efi_get_embedded_fw(const char *name, const u8 **data, size_t *size)
{
struct efi_embedded_fw *iter, *fw = NULL;
if (!efi_embedded_fw_checked) {
if (!checked_for_fw) {
pr_warn("Warning %s called while we did not check for embedded fw\n",
__func__);
return -ENOENT;

21
drivers/firmware/efi/embedded-firmware.h
View File

@ -1,21 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _EFI_EMBEDDED_FW_INTERNAL_H_
#define _EFI_EMBEDDED_FW_INTERNAL_H_
/*
* This struct and efi_embedded_fw_list are private to the efi-embedded fw
* implementation they only in separate header for use by lib/test_firmware.c.
*/
struct efi_embedded_fw {
struct list_head list;
const char *name;
const u8 *data;
size_t length;
};
#ifdef CONFIG_TEST_FIRMWARE
extern struct list_head efi_embedded_fw_list;
extern bool efi_embedded_fw_checked;
#endif
#endif /* _EFI_EMBEDDED_FW_INTERNAL_H_ */

13
include/linux/efi_embedded_fw.h
View File

@ -7,6 +7,19 @@
#define EFI_EMBEDDED_FW_PREFIX_LEN 8
/*
* This struct and efi_embedded_fw_list are private to the efi-embedded fw
* implementation they are in this header for use by lib/test_firmware.c only!
*/
struct efi_embedded_fw {
struct list_head list;
const char *name;
const u8 *data;
size_t length;
};
extern struct list_head efi_embedded_fw_list;
/**
* struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
* code to search for embedded firmwares.

5
lib/test_firmware.c
View File

@ -489,7 +489,6 @@ static ssize_t trigger_request_store(struct device *dev,
static DEVICE_ATTR_WO(trigger_request);
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
#include "../drivers/firmware/efi/embedded-firmware.h"
static ssize_t trigger_request_platform_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@ -502,7 +501,6 @@ static ssize_t trigger_request_platform_store(struct device *dev,
};
struct efi_embedded_fw efi_embedded_fw;
const struct firmware *firmware = NULL;
bool saved_efi_embedded_fw_checked;
char *name;
int rc;
@ -515,8 +513,6 @@ static ssize_t trigger_request_platform_store(struct device *dev,
efi_embedded_fw.data = (void *)test_data;
efi_embedded_fw.length = sizeof(test_data);
list_add(&efi_embedded_fw.list, &efi_embedded_fw_list);
saved_efi_embedded_fw_checked = efi_embedded_fw_checked;
efi_embedded_fw_checked = true;
pr_info("loading '%s'\n", name);
rc = firmware_request_platform(&firmware, name, dev);
@ -534,7 +530,6 @@ static ssize_t trigger_request_platform_store(struct device *dev,
rc = count;
out:
efi_embedded_fw_checked = saved_efi_embedded_fw_checked;
release_firmware(firmware);
list_del(&efi_embedded_fw.list);
kfree(name);