linux/drivers/fsi, branch v6.3

driver core: make struct device_type.devnode() take a const *

2023-01-27T12:45:38Z

The devnode() callback in struct device_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Jens Axboe Cc: Alison Schofield Cc: Vishal Verma Cc: Ira Weiny Cc: Ben Widawsky Cc: Jeremy Kerr Cc: Joel Stanley Cc: Alistar Popple Cc: Eddie James Cc: Jonathan Cameron Cc: Jilin Yuan Cc: Heikki Krogerus Cc: Alan Stern Cc: Andy Shevchenko Cc: Thomas Gleixner Cc: Jason Gunthorpe Cc: "Rafael J. Wysocki" Cc: Won Chung Acked-by: Dan Williams Acked-by: Alexander Shishkin Acked-by: Hans de Goede Link: https://lore.kernel.org/r/20230111113018.459199-7-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

use less confusing names for iov_iter direction initializers

2022-11-25T18:01:55Z

READ/WRITE proved to be actively confusing - the meanings are "data destination, as used with read(2)" and "data source, as used with write(2)", but people keep interpreting those as "we read data from it" and "we write data to it", i.e. exactly the wrong way. Call them ITER_DEST and ITER_SOURCE - at least that is harder to misinterpret... Signed-off-by: Al Viro

[fsi] WRITE is "data source", not destination...

2022-11-25T18:01:20Z

Signed-off-by: Al Viro

fsi: core: Check error number after calling ida_simple_get

2022-09-28T11:40:57Z

If allocation fails, the ida_simple_get() will return error number. So master->idx could be error number and be used in dev_set_name(). Therefore, it should be better to check it and return error if fails, like the ida_simple_get() in __fsi_get_new_minor(). Fixes: 09aecfab93b8 ("drivers/fsi: Add fsi master definition") Signed-off-by: Jiasheng Jiang Reviewed-by: Eddie James Link: https://lore.kernel.org/r/20220111073411.614138-1-jiasheng@iscas.ac.cn Signed-off-by: Joel Stanley

fsi: occ: Support probing the hwmon child device from dts node

2022-09-28T11:40:57Z

There is now a need for reading devicetree properties in the OCC hwmon driver, which isn't current supported as the FSI driver just instantiates a basic platform device. Add support for this use case by checking for an "occ-hwmon" node and if present, creating an OF device from it. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20220809200701.218059-3-eajames@linux.ibm.com Signed-off-by: Joel Stanley

fsi: master-ast-cf: Fix missing of_node_put in fsi_master_acf_probe

2022-09-28T11:40:57Z

of_parse_phandle returns node pointer with refcount incremented, use of_node_put() on it when done. Reported-by: Zeal Robot Signed-off-by: Lv Ruyi Link: https://lore.kernel.org/r/20220407085911.2491719-1-lv.ruyi@zte.com.cn Signed-off-by: Joel Stanley

fsi: sbefifo: Add detailed debugging information

2022-09-28T11:40:57Z

Provide more output on the timeout status, and make some vdbg calls into dbg calls so they can be enabled at runtime. Signed-off-by: Joel Stanley Link: https://lore.kernel.org/r/20220415050757.281158-1-joel@jms.id.au Signed-off-by: Joel Stanley

fsi: cleanup extern usage in function definition

2022-09-28T11:40:57Z

Smatch reports these issues fsi-core.c:395:12: warning: function 'fsi_slave_claim_range' with external linkage has definition fsi-core.c:409:13: warning: function 'fsi_slave_release_range' with external linkage has definition The storage-class-specifier extern is not needed in a definition, so remove it. Signed-off-by: Tom Rix Link: https://lore.kernel.org/r/20220403140937.3833578-1-trix@redhat.com Signed-off-by: Joel Stanley

fsi: occ: Prevent use after free

2022-09-28T11:40:57Z

Use get_device and put_device in the open and close functions to make sure the device doesn't get freed while a file descriptor is open. Also, lock around the freeing of the device buffer and check the buffer before using it in the submit function. Signed-off-by: Eddie James Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20220513194424.53468-1-eajames@linux.ibm.com Signed-off-by: Joel Stanley

fsi: occ: Fix checksum failure mode

2022-09-27T07:27:17Z

Change the checksum errno to something different than the errno used for a bad SBE message. In addition, don't set the user's response length to the data length in this case, since it's not SBE FFDC. Signed-off-by: Eddie James Link: https://lore.kernel.org/r/20220426154956.27205-2-eajames@linux.ibm.com Signed-off-by: Joel Stanley