diff options
-rw-r--r-- | drivers/spi/spi-davinci.c | 8 | ||||
-rw-r--r-- | drivers/spi/spi-dw.c | 16 | ||||
-rw-r--r-- | drivers/spi/spi-ep93xx.c | 1 | ||||
-rw-r--r-- | drivers/spi/spi-mxs.c | 4 | ||||
-rw-r--r-- | drivers/spi/spi-orion.c | 5 | ||||
-rw-r--r-- | drivers/spi/spi-tegra114.c | 9 | ||||
-rw-r--r-- | drivers/spi/spi-tegra20-sflash.c | 3 | ||||
-rw-r--r-- | drivers/spi/spi-txx9.c | 2 | ||||
-rw-r--r-- | drivers/spi/spi-xtensa-xtfpga.c | 1 |
9 files changed, 36 insertions, 13 deletions
diff --git a/drivers/spi/spi-davinci.c b/drivers/spi/spi-davinci.c index 276a3884fb3c..514852cb7b3c 100644 --- a/drivers/spi/spi-davinci.c +++ b/drivers/spi/spi-davinci.c @@ -167,8 +167,10 @@ static void davinci_spi_rx_buf_u16(u32 data, struct davinci_spi *dspi) static u32 davinci_spi_tx_buf_u8(struct davinci_spi *dspi) { u32 data = 0; + if (dspi->tx) { const u8 *tx = dspi->tx; + data = *tx++; dspi->tx = tx; } @@ -178,8 +180,10 @@ static u32 davinci_spi_tx_buf_u8(struct davinci_spi *dspi) static u32 davinci_spi_tx_buf_u16(struct davinci_spi *dspi) { u32 data = 0; + if (dspi->tx) { const u16 *tx = dspi->tx; + data = *tx++; dspi->tx = tx; } @@ -985,8 +989,8 @@ static int davinci_spi_probe(struct platform_device *pdev) goto free_clk; dev_info(&pdev->dev, "DMA: supported\n"); - dev_info(&pdev->dev, "DMA: RX channel: %pa, TX channel: %pa, " - "event queue: %d\n", &dma_rx_chan, &dma_tx_chan, + dev_info(&pdev->dev, "DMA: RX channel: %pa, TX channel: %pa, event queue: %d\n", + &dma_rx_chan, &dma_tx_chan, pdata->dma_event_q); } diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 6e55334c239a..fdb5a6d1c8c6 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -131,8 +131,7 @@ static int mrst_spi_debugfs_init(struct dw_spi *dws) static void mrst_spi_debugfs_remove(struct dw_spi *dws) { - if (dws->debugfs) - debugfs_remove_recursive(dws->debugfs); + debugfs_remove_recursive(dws->debugfs); } #else @@ -173,7 +172,7 @@ static inline u32 rx_max(struct dw_spi *dws) { u32 rx_left = (dws->rx_end - dws->rx) / dws->n_bytes; - return min(rx_left, (u32)dw_readw(dws, DW_SPI_RXFLR)); + return min_t(u32, rx_left, dw_readw(dws, DW_SPI_RXFLR)); } static void dw_writer(struct dw_spi *dws) @@ -224,8 +223,9 @@ static void *next_transfer(struct dw_spi *dws) struct spi_transfer, transfer_list); return RUNNING_STATE; - } else - return DONE_STATE; + } + + return DONE_STATE; } /* @@ -467,10 +467,12 @@ static void pump_transfers(unsigned long data) */ if (!dws->dma_mapped && !chip->poll_mode) { int templen = dws->len / dws->n_bytes; + txint_level = dws->fifo_len / 2; txint_level = (templen > txint_level) ? txint_level : templen; - imask |= SPI_INT_TXEI | SPI_INT_TXOI | SPI_INT_RXUI | SPI_INT_RXOI; + imask |= SPI_INT_TXEI | SPI_INT_TXOI | + SPI_INT_RXUI | SPI_INT_RXOI; dws->transfer_handler = interrupt_transfer; } @@ -511,7 +513,6 @@ static void pump_transfers(unsigned long data) early_exit: giveback(dws); - return; } static int dw_spi_transfer_one_message(struct spi_master *master, @@ -615,6 +616,7 @@ static void spi_hw_init(struct dw_spi *dws) */ if (!dws->fifo_len) { u32 fifo; + for (fifo = 2; fifo <= 257; fifo++) { dw_writew(dws, DW_SPI_TXFLTR, fifo); if (fifo != dw_readw(dws, DW_SPI_TXFLTR)) diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index 2f675d32df0e..bf9728773247 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -266,6 +266,7 @@ static int ep93xx_spi_setup(struct spi_device *spi) if (chip->ops && chip->ops->setup) { int ret = chip->ops->setup(spi); + if (ret) { kfree(chip); return ret; diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c index 2884f0c2f5f0..c3f8d3a22472 100644 --- a/drivers/spi/spi-mxs.c +++ b/drivers/spi/spi-mxs.c @@ -154,12 +154,14 @@ static int mxs_ssp_wait(struct mxs_spi *spi, int offset, int mask, bool set) static void mxs_ssp_dma_irq_callback(void *param) { struct mxs_spi *spi = param; + complete(&spi->c); } static irqreturn_t mxs_ssp_irq_handler(int irq, void *dev_id) { struct mxs_ssp *ssp = dev_id; + dev_err(ssp->dev, "%s[%i] CTRL1=%08x STATUS=%08x\n", __func__, __LINE__, readl(ssp->base + HW_SSP_CTRL1(ssp)), @@ -189,7 +191,7 @@ static int mxs_spi_txrx_dma(struct mxs_spi *spi, if (!len) return -EINVAL; - dma_xfer = kzalloc(sizeof(*dma_xfer) * sgs, GFP_KERNEL); + dma_xfer = kcalloc(sgs, sizeof(*dma_xfer), GFP_KERNEL); if (!dma_xfer) return -ENOMEM; diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index c4675fa8b645..345e7d61c399 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -179,8 +179,8 @@ static inline int orion_spi_wait_till_ready(struct orion_spi *orion_spi) for (i = 0; i < ORION_SPI_WAIT_RDY_MAX_LOOP; i++) { if (readl(spi_reg(orion_spi, ORION_SPI_INT_CAUSE_REG))) return 1; - else - udelay(1); + + udelay(1); } return -1; @@ -360,6 +360,7 @@ static int orion_spi_probe(struct platform_device *pdev) master->bus_num = pdev->id; if (pdev->dev.of_node) { u32 cell_index; + if (!of_property_read_u32(pdev->dev.of_node, "cell-index", &cell_index)) master->bus_num = cell_index; diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index e4a85ada861d..795bcbc0131b 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -302,6 +302,7 @@ static unsigned tegra_spi_fill_tx_fifo_from_client_txbuf( max_n_32bit = DIV_ROUND_UP(nbytes, 4); for (count = 0; count < max_n_32bit; count++) { u32 x = 0; + for (i = 0; (i < 4) && nbytes; i++, nbytes--) x |= (u32)(*tx_buf++) << (i * 8); tegra_spi_writel(tspi, x, SPI_TX_FIFO); @@ -312,6 +313,7 @@ static unsigned tegra_spi_fill_tx_fifo_from_client_txbuf( nbytes = written_words * tspi->bytes_per_word; for (count = 0; count < max_n_32bit; count++) { u32 x = 0; + for (i = 0; nbytes && (i < tspi->bytes_per_word); i++, nbytes--) x |= (u32)(*tx_buf++) << (i * 8); @@ -338,6 +340,7 @@ static unsigned int tegra_spi_read_rx_fifo_to_client_rxbuf( len = tspi->curr_dma_words * tspi->bytes_per_word; for (count = 0; count < rx_full_count; count++) { u32 x = tegra_spi_readl(tspi, SPI_RX_FIFO); + for (i = 0; len && (i < 4); i++, len--) *rx_buf++ = (x >> i*8) & 0xFF; } @@ -345,8 +348,10 @@ static unsigned int tegra_spi_read_rx_fifo_to_client_rxbuf( read_words += tspi->curr_dma_words; } else { u32 rx_mask = ((u32)1 << t->bits_per_word) - 1; + for (count = 0; count < rx_full_count; count++) { u32 x = tegra_spi_readl(tspi, SPI_RX_FIFO) & rx_mask; + for (i = 0; (i < tspi->bytes_per_word); i++) *rx_buf++ = (x >> (i*8)) & 0xFF; } @@ -365,6 +370,7 @@ static void tegra_spi_copy_client_txbuf_to_spi_txbuf( if (tspi->is_packed) { unsigned len = tspi->curr_dma_words * tspi->bytes_per_word; + memcpy(tspi->tx_dma_buf, t->tx_buf + tspi->cur_pos, len); } else { unsigned int i; @@ -374,6 +380,7 @@ static void tegra_spi_copy_client_txbuf_to_spi_txbuf( for (count = 0; count < tspi->curr_dma_words; count++) { u32 x = 0; + for (i = 0; consume && (i < tspi->bytes_per_word); i++, consume--) x |= (u32)(*tx_buf++) << (i * 8); @@ -396,6 +403,7 @@ static void tegra_spi_copy_spi_rxbuf_to_client_rxbuf( if (tspi->is_packed) { unsigned len = tspi->curr_dma_words * tspi->bytes_per_word; + memcpy(t->rx_buf + tspi->cur_rx_pos, tspi->rx_dma_buf, len); } else { unsigned int i; @@ -405,6 +413,7 @@ static void tegra_spi_copy_spi_rxbuf_to_client_rxbuf( for (count = 0; count < tspi->curr_dma_words; count++) { u32 x = tspi->rx_dma_buf[count] & rx_mask; + for (i = 0; (i < tspi->bytes_per_word); i++) *rx_buf++ = (x >> (i*8)) & 0xFF; } diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c index 3548ce25c08f..cd66fe7b78a9 100644 --- a/drivers/spi/spi-tegra20-sflash.c +++ b/drivers/spi/spi-tegra20-sflash.c @@ -99,7 +99,7 @@ #define SPI_TX_TRIG_MASK (0x3 << 16) #define SPI_TX_TRIG_1W (0x0 << 16) #define SPI_TX_TRIG_4W (0x1 << 16) -#define SPI_DMA_BLK_COUNT(count) (((count) - 1) & 0xFFFF); +#define SPI_DMA_BLK_COUNT(count) (((count) - 1) & 0xFFFF) #define SPI_TX_FIFO 0x10 #define SPI_RX_FIFO 0x20 @@ -221,6 +221,7 @@ static int tegra_sflash_read_rx_fifo_to_client_rxbuf( while (!(status & SPI_RXF_EMPTY)) { int i; u32 x = tegra_sflash_readl(tsd, SPI_RX_FIFO); + for (i = 0; (i < tsd->bytes_per_word); i++) *rx_buf++ = (x >> (i*8)) & 0xFF; read_words++; diff --git a/drivers/spi/spi-txx9.c b/drivers/spi/spi-txx9.c index 5f183baa91a9..2501a8373e89 100644 --- a/drivers/spi/spi-txx9.c +++ b/drivers/spi/spi-txx9.c @@ -97,6 +97,7 @@ static void txx9spi_cs_func(struct spi_device *spi, struct txx9spi *c, int on, unsigned int cs_delay) { int val = (spi->mode & SPI_CS_HIGH) ? on : !on; + if (on) { /* deselect the chip with cs_change hint in last transfer */ if (c->last_chipselect >= 0) @@ -188,6 +189,7 @@ static void txx9spi_work_one(struct txx9spi *c, struct spi_message *m) if (prev_speed_hz != speed_hz || prev_bits_per_word != bits_per_word) { int n = DIV_ROUND_UP(c->baseclk, speed_hz) - 1; + n = clamp(n, SPI_MIN_DIVIDER, SPI_MAX_DIVIDER); /* enter config mode */ txx9spi_wr(c, mcr | TXx9_SPMCR_CONFIG | TXx9_SPMCR_BCLR, diff --git a/drivers/spi/spi-xtensa-xtfpga.c b/drivers/spi/spi-xtensa-xtfpga.c index 41e158187f9d..0dc5df5233a9 100644 --- a/drivers/spi/spi-xtensa-xtfpga.c +++ b/drivers/spi/spi-xtensa-xtfpga.c @@ -46,6 +46,7 @@ static inline unsigned int xtfpga_spi_read32(const struct xtfpga_spi *spi, static inline void xtfpga_spi_wait_busy(struct xtfpga_spi *xspi) { unsigned i; + for (i = 0; xtfpga_spi_read32(xspi, XTFPGA_SPI_BUSY) && i < BUSY_WAIT_US; ++i) udelay(1); |