[PATCH v4 01/19] firmware: simplify dev_*() print messages for generic helpers

From: Mimi Zohar
Date: Fri Feb 12 2016 - 13:38:54 EST


From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>

Simplify a few of the *generic* shared dev_warn() and dev_dbg()
print messages for three reasons:

0) Historically firmware_class code was added to help
get device driver firmware binaries but these days
request_firmware*() helpers are being repurposed for
general *system data* needed by the kernel.

1) This will also help generalize shared code as much as possible
later in the future in consideration for a new extensible firmware
API which will enable to separate usermode helper code out as much
as possible.

2) Kees Cook pointed out the the prints already have the device
associated as dev_*() helpers are used, that should help identify
the user and case in which the helpers are used. That should provide
enough context and simplifies the messages further.

v4: generalize debug/warn messages even further as suggested by
Kees Cook.

Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
Cc: Ming Lei <ming.lei@xxxxxxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxx>
Cc: VojtÄch PavlÃk <vojtech@xxxxxxx>
Cc: Kyle McMartin <kyle@xxxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx>
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/firmware_class.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index b9250e5..ce88355 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -353,15 +353,15 @@ static int fw_get_filesystem_firmware(struct device *device,
rc = fw_read_file_contents(file, buf);
fput(file);
if (rc)
- dev_warn(device, "firmware, attempted to load %s, but failed with error %d\n",
- path, rc);
+ dev_warn(device, "loading %s failed with error %d\n",
+ path, rc);
else
break;
}
__putname(path);

if (!rc) {
- dev_dbg(device, "firmware: direct-loading firmware %s\n",
+ dev_dbg(device, "direct-loading %s\n",
buf->fw_id);
mutex_lock(&fw_lock);
set_bit(FW_STATUS_DONE, &buf->status);
@@ -1051,7 +1051,7 @@ _request_firmware_prepare(struct firmware **firmware_p, const char *name,
}

if (fw_get_builtin_firmware(firmware, name)) {
- dev_dbg(device, "firmware: using built-in firmware %s\n", name);
+ dev_dbg(device, "using built-in %s\n", name);
return 0; /* assigned */
}

--
2.1.0