[#5879] GPIO controlled slave request may fail when bfin_spi_setup() gets executed twice

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[#5879] GPIO controlled slave request may fail when bfin_spi_setup() gets executed twice

Submitted By: Michael Hennerich

Open Date

2010-02-03 10:40:13     Close Date

2010-02-22 10:29:20

Priority:

Medium     Assignee:

Michael Hennerich

Status:

Closed     Fixed In Release:

N/A

Found In Release:

2010R1     Release:

Category:

N/A     Board:

N/A

Processor:

ALL     Silicon Revision:

any

Is this bug repeatable?:

Yes     Resolution:

Fixed

Uboot version or rev.:

any     Toolchain version or rev.:

any

App binary format:

N/A     

Summary: GPIO controlled slave request may fail when bfin_spi_setup() gets executed twice

Details:

 

GPIO controlled slave request may fail when bfin_spi_setup() gets executed twice.

Some drivers such as the ADS7846 calls spi_setup() from its probe function.

 

    spi->bits_per_word = 8;

    spi->mode = SPI_MODE_0;

    err = spi_setup(spi);

 

This will cause gpiolib:gpio_request() to return -EBUSY.

 

Follow-ups

 

--- Michael Hennerich                                        2010-02-03 10:47:19

Only gpio_request() on the first setup.

Fixed on trunk

 

 

 

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