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Commit 484d6d50 authored by Andres Salomon's avatar Andres Salomon Committed by Anton Vorontsov
Browse files

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: default avatarAndres Salomon <dilinger@debian.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAnton Vorontsov <cbouatmailru@gmail.com>
parent b2bd8a3b

drivers/power/olpc_battery.c

+8 −2
Original line number Diff line number Diff line
@@ -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;

	}