Title: [8604] trunk/drivers/spi/spi_bfin5xx.c: [#5903], limit users to use gpio cs while CHPA = 0
- Revision
- 8604
- Author
- bhsong
- Date
- 2010-04-05 23:36:24 -0400 (Mon, 05 Apr 2010)
Log Message
[#5903], limit users to use gpio cs while CHPA = 0
Modified Paths
Diff
Modified: trunk/drivers/spi/spi_bfin5xx.c (8603 => 8604)
--- trunk/drivers/spi/spi_bfin5xx.c 2010-04-02 16:00:12 UTC (rev 8603)
+++ trunk/drivers/spi/spi_bfin5xx.c 2010-04-06 03:36:24 UTC (rev 8604)
@@ -1139,9 +1139,13 @@
*/
chip->baud = hz_to_spi_baud(spi->max_speed_hz);
chip->chip_select_num = spi->chip_select;
- if (chip->chip_select_num < MAX_CTRL_CS)
+ if (chip->chip_select_num < MAX_CTRL_CS) {
+ if (!(spi->mode & SPI_CPHA)) {
+ dev_err(&spi->dev, "unsupported non-gpio chipselect while CPHA is 0\n");
+ goto error;
+ }
chip->flag = (1 << spi->chip_select) << 8;
- else
+ } else
chip->cs_gpio = chip->chip_select_num - MAX_CTRL_CS;
if (chip->enable_dma && chip->pio_interrupt) {
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