Commit Graph

4 Commits

Author SHA1 Message Date
Asmaa Mnebhi 71be7b0e7d Fix uninitialized variable in ipmb_dev_int.c
ret at line 112 of ipmb_dev_int.c is uninitialized which
results in a warning during build regressions.
This warning was found by build regression/improvement
testing for v5.3-rc1.

Reported-by: build regression/improvement testing for v5.3-rc1.
Fixes: 51bd6f2915 ("Add support for IPMB driver")
Signed-off-by: Asmaa Mnebhi <Asmaa@mellanox.com>
Message-Id: <571dbb67cf58411d567953d9fb3739eb4789238b.1563996586.git.Asmaa@mellanox.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-07-24 15:53:21 -05:00
kbuild test robot a88b6d5668 fix platform_no_drv_owner.cocci warnings
drivers/char/ipmi/ipmb_dev_int.c:352:3-8: No need to set .owner here. The core will do it.

 Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Fixes: 51bd6f2915 ("Add support for IPMB driver")
CC: Asmaa Mnebhi <Asmaa@mellanox.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Message-Id: <20190623185044.GA94834@lkp-kbuild21>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-06-23 16:16:52 -05:00
Arnd Bergmann 21feadd024 ipmi: ipmb: don't allocate i2c_client on stack
The i2c_client structure can be fairly large, which leads to
a warning about possible kernel stack overflow in some
configurations:

drivers/char/ipmi/ipmb_dev_int.c:115:16: error: stack frame size of 1032 bytes in function 'ipmb_write' [-Werror,-Wframe-larger-than=]

There is no real reason to even declare an i2c_client, as we can simply
call i2c_smbus_xfer() directly instead of the i2c_smbus_write_block_data()
wrapper.

Convert the ipmb_write() to use an open-coded i2c_smbus_write_block_data()
here, without changing the behavior.

It seems that there is another problem with this implementation;
when user space passes a length of more than I2C_SMBUS_BLOCK_MAX
bytes, all the rest is silently ignored. This should probably be
addressed in a separate patch, but I don't know what the intended
behavior is here.

Fixes: 51bd6f2915 ("Add support for IPMB driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Message-Id: <20190619125045.918700-1-arnd@arndb.de>
Acked-by: Asmaa Mnebhi <Asmaa@mellanox.com>
[Broke up a line >80 characters on i2c_smbus_xfer().]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-06-19 09:03:55 -05:00
Asmaa Mnebhi 51bd6f2915 Add support for IPMB driver
Support receiving IPMB requests on a Satellite MC from the BMC.
Once a response is ready, this driver will send back a response
to the BMC via the IPMB channel.

Signed-off-by: Asmaa Mnebhi <Asmaa@mellanox.com>
Acked-by: vadimp@mellanox.com
Message-Id: <319690553a0da2a1e80b400941341081b383e5f1.1560192707.git.Asmaa@mellanox.com>
[Move the config option to outside the ipmi msghandler, as it's not
 dependent on that.  Fixed one small whitespace issue.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2019-06-10 14:47:10 -05:00