target/linux/bcm27xx/patches-4.19/950-0615-Pisound-Remove-spinlock-usage-around-spi_sync.patch

   1 From ace4e8240d581e6053f0165b2682a2db745d49dc Mon Sep 17 00:00:00 2001
   2 From: Giedrius <giedrius@blokas.io>
   3 Date: Fri, 12 Jul 2019 17:45:55 +0300
   4 Subject: [PATCH] Pisound: Remove spinlock usage around spi_sync
   5
   6 ---
   7  sound/soc/bcm/pisound.c | 5 -----
   8  1 file changed, 5 deletions(-)
   9
  10 --- a/sound/soc/bcm/pisound.c
  11 +++ b/sound/soc/bcm/pisound.c
  12 @@ -286,9 +286,6 @@ static irqreturn_t data_available_interr
  13         return IRQ_HANDLED;
  14  }
  15
  16 -static DEFINE_SPINLOCK(spilock);
  17 -static unsigned long spilockflags;
  18 -
  19  static uint16_t spi_transfer16(uint16_t val)
  20  {
  21         uint8_t txbuf[2];
  22 @@ -333,9 +330,7 @@ static void spi_transfer(const uint8_t *
  23         transfer.delay_usecs = 10;
  24         spi_message_add_tail(&transfer, &msg);
  25
  26 -       spin_lock_irqsave(&spilock, spilockflags);
  27         err = spi_sync(pisnd_spi_device, &msg);
  28 -       spin_unlock_irqrestore(&spilock, spilockflags);
  29
  30         if (err < 0) {
  31                 printe("spi_sync error %d\n", err);