diff options
Diffstat (limited to 'drivers/spi/spi-mem.c')
| -rw-r--r-- | drivers/spi/spi-mem.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 93e255287ab9..ef53290b7d24 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -159,6 +159,9 @@ bool spi_mem_default_supports_op(struct spi_mem *mem, if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr) return false; + if (op->cmd.nbytes != 1) + return false; + return true; } EXPORT_SYMBOL_GPL(spi_mem_default_supports_op); @@ -173,7 +176,7 @@ static bool spi_mem_buswidth_is_valid(u8 buswidth) static int spi_mem_check_op(const struct spi_mem_op *op) { - if (!op->cmd.buswidth) + if (!op->cmd.buswidth || !op->cmd.nbytes) return -EINVAL; if ((op->addr.nbytes && !op->addr.buswidth) || @@ -309,8 +312,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) return ret; } - tmpbufsize = sizeof(op->cmd.opcode) + op->addr.nbytes + - op->dummy.nbytes; + tmpbufsize = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes; /* * Allocate a buffer to transmit the CMD, ADDR cycles with kmalloc() so @@ -325,7 +327,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) tmpbuf[0] = op->cmd.opcode; xfers[xferpos].tx_buf = tmpbuf; - xfers[xferpos].len = sizeof(op->cmd.opcode); + xfers[xferpos].len = op->cmd.nbytes; xfers[xferpos].tx_nbits = op->cmd.buswidth; spi_message_add_tail(&xfers[xferpos], &msg); xferpos++; @@ -427,8 +429,7 @@ int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op) return ctlr->mem_ops->adjust_op_size(mem, op); if (!ctlr->mem_ops || !ctlr->mem_ops->exec_op) { - len = sizeof(op->cmd.opcode) + op->addr.nbytes + - op->dummy.nbytes; + len = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes; if (len > spi_max_transfer_size(mem->spi)) return -EINVAL; |