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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-20 22:14:33 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-20 22:14:33 +0300 |
| commit | 4c17ca27923c16fd73bbb9ad033c7d749c3bcfcc (patch) | |
| tree | 60b52872c93da47b2cfdf1ce7a7446d3738437dd /drivers/spi | |
| parent | 2ff59bad6f24813e4c9e8f2022684010ec0e58d2 (diff) | |
| parent | 2bab94090b01bc593d8bc25f68df41f198721173 (diff) | |
| download | linux-4c17ca27923c16fd73bbb9ad033c7d749c3bcfcc.tar.xz | |
Merge tag 'spi-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark BrownL
"This contains a couple of fixes, one fix for handling of zero length
transfers on Rockchip devices and a warning fix which will conflict
with a version you did but cleans up some extra unneeded forward
declarations as well which seems a bit neater"
* tag 'spi-fix-v5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: tegra20-slink: Declare runtime suspend and resume functions conditionally
spi: rockchip: handle zero length transfers without timing out
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-rockchip.c | 6 | ||||
| -rw-r--r-- | drivers/spi/spi-tegra20-slink.c | 9 |
2 files changed, 10 insertions, 5 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 540861ca2ba3..553b6b9d0222 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -600,6 +600,12 @@ static int rockchip_spi_transfer_one( int ret; bool use_dma; + /* Zero length transfers won't trigger an interrupt on completion */ + if (!xfer->len) { + spi_finalize_current_transfer(ctlr); + return 1; + } + WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) && (readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY)); diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index 56c6feb2ba3e..8ce840c7ecc8 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -204,9 +204,6 @@ struct tegra_slink_data { struct dma_async_tx_descriptor *tx_dma_desc; }; -static int tegra_slink_runtime_suspend(struct device *dev); -static int tegra_slink_runtime_resume(struct device *dev); - static inline u32 tegra_slink_readl(struct tegra_slink_data *tspi, unsigned long reg) { @@ -1185,7 +1182,8 @@ static int tegra_slink_resume(struct device *dev) } #endif -static int __maybe_unused tegra_slink_runtime_suspend(struct device *dev) +#ifdef CONFIG_PM +static int tegra_slink_runtime_suspend(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); struct tegra_slink_data *tspi = spi_master_get_devdata(master); @@ -1197,7 +1195,7 @@ static int __maybe_unused tegra_slink_runtime_suspend(struct device *dev) return 0; } -static int __maybe_unused tegra_slink_runtime_resume(struct device *dev) +static int tegra_slink_runtime_resume(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); struct tegra_slink_data *tspi = spi_master_get_devdata(master); @@ -1210,6 +1208,7 @@ static int __maybe_unused tegra_slink_runtime_resume(struct device *dev) } return 0; } +#endif /* CONFIG_PM */ static const struct dev_pm_ops slink_pm_ops = { SET_RUNTIME_PM_OPS(tegra_slink_runtime_suspend, |