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| author | Per Forlin <per.forlin@linaro.org> | 2011-08-19 14:52:37 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-10-26 15:43:34 -0400 |
| commit | 1b676f70c108cda90cf9d114d16c677584400efc (patch) | |
| tree | 7f4a18ade6db764ba3c882e294040a91adc2911e /lib | |
| parent | df87ecbf19109bab04a92df047a9949838206abc (diff) | |
| download | lwn-1b676f70c108cda90cf9d114d16c677584400efc.tar.gz lwn-1b676f70c108cda90cf9d114d16c677584400efc.zip | |
mmc: core: add random fault injection
This adds support to inject data errors after a completed host transfer.
The mmc core will return error even though the host transfer is successful.
This simple fault injection proved to be very useful to test the
non-blocking error handling in the mmc_blk_issue_rw_rq().
Random faults can also test how the host driver handles pre_req()
and post_req() in case of errors.
Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index c0cb9c4bc46d..1c7dbbf9e449 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1070,6 +1070,17 @@ config FAIL_IO_TIMEOUT Only works with drivers that use the generic timeout handling, for others it wont do anything. +config FAIL_MMC_REQUEST + bool "Fault-injection capability for MMC IO" + select DEBUG_FS + depends on FAULT_INJECTION && MMC + help + Provide fault-injection capability for MMC IO. + This will make the mmc core return data errors. This is + useful to test the error handling in the mmc block device + and to test how the mmc host driver handles retries from + the block device. + config FAULT_INJECTION_DEBUG_FS bool "Debugfs entries for fault-injection capabilities" depends on FAULT_INJECTION && SYSFS && DEBUG_FS |