Commit-ID: 56394ab8c26893bbaef02da04a06cc5ae71ccc5c
Gitweb: http://git.kernel.org/tip/56394ab8c26893bbaef02da04a06cc5ae71ccc5c
Author: Matt Fleming <matt.fleming@xxxxxxxxx>
AuthorDate: Thu, 11 Sep 2014 09:04:25 +0100
Committer: Matt Fleming <matt.fleming@xxxxxxxxx>
CommitDate: Wed, 24 Sep 2014 12:46:59 +0100
x86/efi: Delete misleading efi_printk() error message
A number of people are reporting seeing the "setup_efi_pci() failed!"
error message in what used to be a quiet boot,
https://bugzilla.kernel.org/show_bug.cgi?id=81891
The message isn't all that helpful because setup_efi_pci() can return a
non-success error code for a variety of reasons, not all of them fatal.
Let's drop the return code from setup_efi_pci*() altogether, since
there's no way to process it in any meaningful way outside of the inner
__setup_efi_pci*() functions.
Reported-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx>
Reported-by: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx>
Cc: Ulf Winkelvos <ulf@xxxxxxxxxxxx>
Cc: Andre Müller <andre.muller@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
---
arch/x86/boot/compressed/eboot.c | 31 ++++++++++++++++---------------
1 file changed, 16 insertions(+), 15 deletions(-)
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index b04f1e0..dc30c17 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -365,7 +365,7 @@ free_struct:
return status;
}
-static efi_status_t
+static void
setup_efi_pci32(struct boot_params *params, void **pci_handle,
unsigned long size)
{
@@ -408,8 +408,6 @@ setup_efi_pci32(struct boot_params *params, void **pci_handle,
data = (struct setup_data *)rom;
}
-
- return status;
}
static efi_status_t
@@ -468,7 +466,7 @@ free_struct:
}
-static efi_status_t
+static void
setup_efi_pci64(struct boot_params *params, void **pci_handle,
unsigned long size)
{
@@ -511,11 +509,18 @@ setup_efi_pci64(struct boot_params *params, void **pci_handle,
data = (struct setup_data *)rom;
}
-
- return status;
}
-static efi_status_t setup_efi_pci(struct boot_params *params)
+/*
+ * There's no way to return an informative status from this function,
+ * because any analysis (and printing of error messages) needs to be
+ * done directly at the EFI function call-site.
+ *
+ * For example, EFI_INVALID_PARAMETER could indicate a bug or maybe we
+ * just didn't find any PCI devices, but there's no way to tell outside
+ * the context of the call.
+ */
+static void setup_efi_pci(struct boot_params *params)
{
efi_status_t status;
void **pci_handle = NULL;
@@ -532,7 +537,7 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
size, (void **)&pci_handle);
if (status != EFI_SUCCESS)
- return status;
+ return;
status = efi_call_early(locate_handle,
EFI_LOCATE_BY_PROTOCOL, &pci_proto,
@@ -543,13 +548,12 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
goto free_handle;
if (efi_early->is64)
- status = setup_efi_pci64(params, pci_handle, size);
+ setup_efi_pci64(params, pci_handle, size);
else
- status = setup_efi_pci32(params, pci_handle, size);
+ setup_efi_pci32(params, pci_handle, size);
free_handle:
efi_call_early(free_pool, pci_handle);
- return status;
}
static void
@@ -1385,10 +1389,7 @@ struct boot_params *efi_main(struct efi_config *c,
setup_graphics(boot_params);
- status = setup_efi_pci(boot_params);
- if (status != EFI_SUCCESS) {
- efi_printk(sys_table, "setup_efi_pci() failed!\n");
- }
+ setup_efi_pci(boot_params);
status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
sizeof(*gdt), (void **)&gdt);
--
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