Commit Graph

6 Commits

Author SHA1 Message Date
Uwe Kleine-König
19a01155dd ipmi: Drop explicit initialization of struct i2c_device_id::driver_data to 0
These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

While at it, also remove commas after the sentinel entries.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Message-Id: <20240708150914.18190-2-u.kleine-koenig@baylibre.com>
Signed-off-by: Corey Minyard <corey@minyard.net>
2024-07-08 15:05:18 -05:00
Dan Carpenter
0627cef361 ipmi: ssif_bmc: prevent integer overflow on 32bit systems
There are actually two bugs here.  First, we need to ensure that count
is at least sizeof(u32) or msg.len will be uninitialized data.

The "msg.len" variable is a u32 that comes from the user.  On 32bit
systems the "sizeof_field(struct ipmi_ssif_msg, len) + msg.len"
addition can overflow if "msg.len" is greater than U32_MAX - 4.

Valid lengths for "msg.len" are 1-254.  Add a check for that to
prevent the integer overflow.

Fixes: dd2bc5cc9e ("ipmi: ssif_bmc: Add SSIF BMC driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Message-Id: <1431ca2e-4e9c-4520-bfc0-6879313c30e9@moroto.mountain>
Signed-off-by: Corey Minyard <corey@minyard.net>
2024-06-14 13:51:36 -05:00
Uwe Kleine-König
e64c82b806 ipmi: Switch i2c drivers back to use .probe()
After commit b8a1a4cd5a ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Message-Id: <20230525204021.696858-1-u.kleine-koenig@pengutronix.de>
Signed-off-by: Corey Minyard <minyard@acm.org>
2023-05-25 18:48:06 -05:00
Uwe Kleine-König
b8fadb3964 ipmi: ssif_bmc: Convert to i2c's .probe_new()
The probe function doesn't make use of the i2c_device_id * parameter so it
can be trivially converted.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Message-Id: <20221118224540.619276-606-uwe@kleine-koenig.org>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2022-11-21 06:59:41 -06:00
Quan Nguyen
6dbd4341b9 ipmi: ssif_bmc: Use EPOLLIN instead of POLLIN
This fixes the following sparse warning:
sparse warnings: (new ones prefixed by >>)
>> drivers/char/ipmi/ssif_bmc.c:254:22: sparse: sparse: invalid assignment: |=
>> drivers/char/ipmi/ssif_bmc.c:254:22: sparse:    left side has type restricted __poll_t
>> drivers/char/ipmi/ssif_bmc.c:254:22: sparse:    right side has type int

Fixes: dd2bc5cc9e ("ipmi: ssif_bmc: Add SSIF BMC driver")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/all/202210181103.ontD9tRT-lkp@intel.com/
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Message-Id: <20221024075956.3312552-1-quan@os.amperecomputing.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2022-10-24 09:19:12 -05:00
Quan Nguyen
dd2bc5cc9e ipmi: ssif_bmc: Add SSIF BMC driver
The SMBus system interface (SSIF) IPMI BMC driver can be used to perform
in-band IPMI communication with their host in management (BMC) side.

Thanks Dan for the copy_from_user() fix in the link below.

Link: https://lore.kernel.org/linux-arm-kernel/20220310114119.13736-4-quan@os.amperecomputing.com/
Signed-off-by: Quan Nguyen <quan@os.amperecomputing.com>
Message-Id: <20221004093106.1653317-2-quan@os.amperecomputing.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2022-10-17 09:51:26 -05:00