diff options
Diffstat (limited to 'sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r153/applesmc-retry-when-accessing-keys.patch')
| -rw-r--r-- | sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r153/applesmc-retry-when-accessing-keys.patch | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r153/applesmc-retry-when-accessing-keys.patch b/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r153/applesmc-retry-when-accessing-keys.patch deleted file mode 100644 index a5ee733..0000000 --- a/sys-kernel/mactel-linux-sources/files/2.6.24-mactel-patches-r153/applesmc-retry-when-accessing-keys.patch +++ /dev/null @@ -1,116 +0,0 @@ -Retry up to 200 ms when reading or writing keys. - -From: Nicolas Boichat <nicolas@boichat.ch> - - ---- - - drivers/hwmon/applesmc.c | 69 +++++++++++++++++++++++++++++++--------------- - 1 files changed, 47 insertions(+), 22 deletions(-) - - -diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c -index c0dd9b1..3b09cdb 100644 ---- a/drivers/hwmon/applesmc.c -+++ b/drivers/hwmon/applesmc.c -@@ -112,6 +112,9 @@ static const char* fan_speed_keys[] = { - #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */ - #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */ - -+#define ACCESS_TIMEOUT_MSECS 500 /* wait up to 500ms when accessing a key */ -+#define ACCESS_WAIT_MSECS 5 /* ... in 5ms increments */ -+ - #define APPLESMC_POLL_INTERVAL 50 /* msecs */ - #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */ - #define APPLESMC_INPUT_FLAT 4 -@@ -186,12 +189,13 @@ static int __wait_status(u8 val) - - /* - * applesmc_read_key - reads len bytes from a given key, and put them in buffer. -+ * Tries up to ACCESS_WAIT_MSECS to read the value. - * Returns zero on success or a negative error on failure. Callers must - * hold applesmc_lock. - */ - static int applesmc_read_key(const char* key, u8* buffer, u8 len) - { -- int i; -+ int i, total, ret; - - if (len > APPLESMC_MAX_DATA_LENGTH) { - printk(KERN_ERR "applesmc_read_key: cannot read more than " -@@ -199,33 +203,54 @@ static int applesmc_read_key(const char* key, u8* buffer, u8 len) - return -EINVAL; - } - -- outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); -- if (__wait_status(0x0c)) -- return -EIO; -+ for (total = ACCESS_TIMEOUT_MSECS; total > 0; -+ total -= ACCESS_WAIT_MSECS) { -+ ret = 0; -+ outb(APPLESMC_READ_CMD, APPLESMC_CMD_PORT); -+ if (__wait_status(0x0c)) { -+ ret = -EIO; -+ goto wait_fail; -+ } - -- for (i = 0; i < 4; i++) { -- outb(key[i], APPLESMC_DATA_PORT); -- if (__wait_status(0x04)) -- return -EIO; -- } -- if (debug) -- printk(KERN_DEBUG "<%s", key); -+ for (i = 0; i < 4; i++) { -+ outb(key[i], APPLESMC_DATA_PORT); -+ if (__wait_status(0x04)) { -+ ret = -EIO; -+ goto wait_fail; -+ } -+ } -+ if (debug) -+ printk(KERN_DEBUG "<%s", key); - -- outb(len, APPLESMC_DATA_PORT); -- if (debug) -- printk(KERN_DEBUG ">%x", len); -+ outb(len, APPLESMC_DATA_PORT); -+ if (debug) -+ printk(KERN_DEBUG ">%x", len); - -- for (i = 0; i < len; i++) { -- if (__wait_status(0x05)) -- return -EIO; -- buffer[i] = inb(APPLESMC_DATA_PORT); -+ for (i = 0; i < len; i++) { -+ if (__wait_status(0x05)) { -+ ret = -EIO; -+ goto wait_fail; -+ } -+ buffer[i] = inb(APPLESMC_DATA_PORT); -+ if (debug) -+ printk(KERN_DEBUG "<%x", buffer[i]); -+ } - if (debug) -- printk(KERN_DEBUG "<%x", buffer[i]); -+ printk(KERN_DEBUG "\n"); -+ -+ break; -+ -+wait_fail: -+ msleep(ACCESS_WAIT_MSECS); -+ continue; - } -- if (debug) -- printk(KERN_DEBUG "\n"); - -- return 0; -+ if (total != ACCESS_TIMEOUT_MSECS) { -+ printk(KERN_DEBUG "Read: Waited %d ms for the value\n", -+ ACCESS_TIMEOUT_MSECS-total); -+ } -+ -+ return ret; - } - - /* |