diff options
Diffstat (limited to 'drivers/spi/stm32_qspi.c')
| -rw-r--r-- | drivers/spi/stm32_qspi.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c index 4acc9047b9..8f4aabc3d1 100644 --- a/drivers/spi/stm32_qspi.c +++ b/drivers/spi/stm32_qspi.c @@ -148,23 +148,24 @@ static int _stm32_qspi_wait_cmd(struct stm32_qspi_priv *priv, const struct spi_mem_op *op) { u32 sr; - int ret; - - if (!op->data.nbytes) - return _stm32_qspi_wait_for_not_busy(priv); + int ret = 0; - ret = readl_poll_timeout(&priv->regs->sr, sr, - sr & STM32_QSPI_SR_TCF, - STM32_QSPI_CMD_TIMEOUT_US); - if (ret) { - log_err("cmd timeout (stat:%#x)\n", sr); - } else if (readl(&priv->regs->sr) & STM32_QSPI_SR_TEF) { - log_err("transfer error (stat:%#x)\n", sr); - ret = -EIO; + if (op->data.nbytes) { + ret = readl_poll_timeout(&priv->regs->sr, sr, + sr & STM32_QSPI_SR_TCF, + STM32_QSPI_CMD_TIMEOUT_US); + if (ret) { + log_err("cmd timeout (stat:%#x)\n", sr); + } else if (readl(&priv->regs->sr) & STM32_QSPI_SR_TEF) { + log_err("transfer error (stat:%#x)\n", sr); + ret = -EIO; + } + /* clear flags */ + writel(STM32_QSPI_FCR_CTCF | STM32_QSPI_FCR_CTEF, &priv->regs->fcr); } - /* clear flags */ - writel(STM32_QSPI_FCR_CTCF | STM32_QSPI_FCR_CTEF, &priv->regs->fcr); + if (!ret) + ret = _stm32_qspi_wait_for_not_busy(priv); return ret; } |