Re: [PATCH 03/10] efi/x86: Use pr_efi_err for error messages

[Joe Perches]

On Wed, 2020-04-29 at 13:41 -0400, Arvind Sankar wrote:
> Use pr_efi_err instead of bare efi_printk for error messages.

Perhaps it'd be better to rename pr_efi_err to eri_err
to it's clearer it's a typical efi_ logging function.

$ git grep -w --name-only pr_efi_err | \
  xargs sed -i 's/\bpr_efi_err\b/efi_err/g'

Looking at code for efi_printk -> efi_char16_printk,
it's somewhat difficult to see where the "output_string"
function pointer is set.  Any clue?

> Signed-off-by: Arvind Sankar <nivedita@xxxxxxxxxxxx>
> ---
>  drivers/firmware/efi/libstub/x86-stub.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
> index 677b5a1e0543..933205772d8c 100644
> --- a/drivers/firmware/efi/libstub/x86-stub.c
> +++ b/drivers/firmware/efi/libstub/x86-stub.c
> @@ -49,7 +49,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
>  	status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size,
>  			     (void **)&rom);
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("Failed to allocate memory for 'rom'\n");
> +		pr_efi_err("Failed to allocate memory for 'rom'\n");
>  		return status;
>  	}
>  
> @@ -65,7 +65,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
>  				PCI_VENDOR_ID, 1, &rom->vendor);
>  
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("Failed to read rom->vendor\n");
> +		pr_efi_err("Failed to read rom->vendor\n");
>  		goto free_struct;
>  	}
>  
> @@ -73,7 +73,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
>  				PCI_DEVICE_ID, 1, &rom->devid);
>  
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("Failed to read rom->devid\n");
> +		pr_efi_err("Failed to read rom->devid\n");
>  		goto free_struct;
>  	}
>  
> @@ -118,7 +118,7 @@ static void setup_efi_pci(struct boot_params *params)
>  				     (void **)&pci_handle);
>  
>  		if (status != EFI_SUCCESS) {
> -			efi_printk("Failed to allocate memory for 'pci_handle'\n");
> +			pr_efi_err("Failed to allocate memory for 'pci_handle'\n");
>  			return;
>  		}
>  
> @@ -172,7 +172,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
>  		return;
>  
>  	if (efi_table_attr(p, version) != 0x10000) {
> -		efi_printk("Unsupported properties proto version\n");
> +		pr_efi_err("Unsupported properties proto version\n");
>  		return;
>  	}
>  
> @@ -185,7 +185,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
>  				     size + sizeof(struct setup_data),
>  				     (void **)&new);
>  		if (status != EFI_SUCCESS) {
> -			efi_printk("Failed to allocate memory for 'properties'\n");
> +			pr_efi_err("Failed to allocate memory for 'properties'\n");
>  			return;
>  		}
>  
> @@ -372,7 +372,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
>  
>  	status = efi_bs_call(handle_protocol, handle, &proto, (void **)&image);
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
> +		pr_efi_err("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
>  		efi_exit(handle, status);
>  	}
>  
> @@ -382,7 +382,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
>  	status = efi_allocate_pages(sizeof(struct boot_params),
>  				    (unsigned long *)&boot_params, ULONG_MAX);
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("Failed to allocate lowmem for boot params\n");
> +		pr_efi_err("Failed to allocate lowmem for boot params\n");
>  		efi_exit(handle, status);
>  	}
>  
> @@ -749,7 +749,7 @@ unsigned long efi_main(efi_handle_t handle,
>  					     hdr->kernel_alignment,
>  					     LOAD_PHYSICAL_ADDR);
>  		if (status != EFI_SUCCESS) {
> -			efi_printk("efi_relocate_kernel() failed!\n");
> +			pr_efi_err("efi_relocate_kernel() failed!\n");
>  			goto fail;
>  		}
>  		/*
> @@ -786,7 +786,7 @@ unsigned long efi_main(efi_handle_t handle,
>  			efi_set_u64_split(size, &hdr->ramdisk_size,
>  					  &boot_params->ext_ramdisk_size);
>  		} else if (status != EFI_NOT_FOUND) {
> -			efi_printk("efi_load_initrd_dev_path() failed!\n");
> +			pr_efi_err("efi_load_initrd_dev_path() failed!\n");
>  			goto fail;
>  		}
>  	}
> @@ -813,13 +813,13 @@ unsigned long efi_main(efi_handle_t handle,
>  
>  	status = exit_boot(boot_params, handle);
>  	if (status != EFI_SUCCESS) {
> -		efi_printk("exit_boot() failed!\n");
> +		pr_efi_err("exit_boot() failed!\n");
>  		goto fail;
>  	}
>  
>  	return bzimage_addr;
>  fail:
> -	efi_printk("efi_main() failed!\n");
> +	pr_efi_err("efi_main() failed!\n");
>  
>  	efi_exit(handle, status);
>  }