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| author | Andres Salomon <dilinger@queued.net> | 2008-05-02 13:41:59 -0700 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2008-05-04 13:14:08 +0400 |
| commit | 484d6d50cca3941db6e063113d124333aed0abc0 (patch) | |
| tree | 7bd15eb728716a577be2d1e28a8fcbc817f91152 /drivers/power | |
| parent | b2bd8a3bcdd18101eb5d85c267c1a1fb8ce9acc7 (diff) | |
| download | lwn-484d6d50cca3941db6e063113d124333aed0abc0.tar.gz lwn-484d6d50cca3941db6e063113d124333aed0abc0.zip | |
power_supply: bump EC version check that we refuse to run with in olpc_battery
Refuse to run with an EC < 0x44. We're playing it safe, and this is a pretty
old EC version.
Also, add a comment about why we're checking the EC version.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/olpc_battery.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c index d5fe6f0c9de0..c8b596a7fc94 100644 --- a/drivers/power/olpc_battery.c +++ b/drivers/power/olpc_battery.c @@ -389,8 +389,14 @@ static int __init olpc_bat_init(void) if (!olpc_platform_info.ecver) return -ENXIO; - if (olpc_platform_info.ecver < 0x43) { - printk(KERN_NOTICE "OLPC EC version 0x%02x too old for battery driver.\n", olpc_platform_info.ecver); + + /* + * We've seen a number of EC protocol changes; this driver requires + * the latest EC protocol, supported by 0x44 and above. + */ + if (olpc_platform_info.ecver < 0x44) { + printk(KERN_NOTICE "OLPC EC version 0x%02x too old for " + "battery driver.\n", olpc_platform_info.ecver); return -ENXIO; } |