From a2875a92b8413b4d7eacf96802c9718aeeb0363f Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Thu, 31 Dec 2015 13:58:13 +0900 Subject: [PATCH 22/23] ALSA: dice: purge transaction initialization at timeout of Dice notification In previous commit, card registration is processed under situation with few bus reset. There's no need to add a workaround of transaction re-initialization at timeout. This commit purges the re-initialization. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/firewire/dice/dice-transaction.c | 31 ++++++++----------------------- 1 file changed, 8 insertions(+), 23 deletions(-) diff --git a/sound/firewire/dice/dice-transaction.c b/sound/firewire/dice/dice-transaction.c index fdb7841c52e3..55c1fbf31626 100644 --- a/sound/firewire/dice/dice-transaction.c +++ b/sound/firewire/dice/dice-transaction.c @@ -65,16 +65,15 @@ static unsigned int get_clock_info(struct snd_dice *dice, __be32 *info) static int set_clock_info(struct snd_dice *dice, unsigned int rate, unsigned int source) { - unsigned int retries = 3; unsigned int i; __be32 info; u32 mask; u32 clock; int err; -retry: + err = get_clock_info(dice, &info); if (err < 0) - goto end; + return err; clock = be32_to_cpu(info); if (source != UINT_MAX) { @@ -87,10 +86,8 @@ retry: if (snd_dice_rates[i] == rate) break; } - if (i == ARRAY_SIZE(snd_dice_rates)) { - err = -EINVAL; - goto end; - } + if (i == ARRAY_SIZE(snd_dice_rates)) + return -EINVAL; mask = CLOCK_RATE_MASK; clock &= ~mask; @@ -104,25 +101,13 @@ retry: err = snd_dice_transaction_write_global(dice, GLOBAL_CLOCK_SELECT, &info, 4); if (err < 0) - goto end; + return err; - /* Timeout means it's invalid request, probably bus reset occurred. */ if (wait_for_completion_timeout(&dice->clock_accepted, - msecs_to_jiffies(NOTIFICATION_TIMEOUT_MS)) == 0) { - if (retries-- == 0) { - err = -ETIMEDOUT; - goto end; - } - - err = snd_dice_transaction_reinit(dice); - if (err < 0) - goto end; + msecs_to_jiffies(NOTIFICATION_TIMEOUT_MS)) == 0) + return -ETIMEDOUT; - msleep(500); /* arbitrary */ - goto retry; - } -end: - return err; + return 0; } int snd_dice_transaction_get_clock_source(struct snd_dice *dice, -- 2.4.10