| ed375186 | 25-Feb-2025 |
Rodrigo Gobbi <[email protected]> |
staging: gpib: change return type of t1_delay function to report errors
The current code returns "unsigned int" and it doesn't handle errors
correctly if it happens during ioctl call for t1 delay co
staging: gpib: change return type of t1_delay function to report errors
The current code returns "unsigned int" and it doesn't handle errors
correctly if it happens during ioctl call for t1 delay configuration.
The ni_usb_t1_delay(), from NI, is the only function returning -1
at this point. The caller, t1_delay_ioctl(), doesn't check for errors
and sets board->t1_nano_sec to -1 and returns success.
The board->t1_nano_sec value is also used in ni_usb_setup_t1_delay()
besides the ioctl call and a value of -1 is treated as being above 1100ns.
It may or may not have a noticeable effect, but it's obviously not right
considering the content of ni_usb_setup_t1_delay().
Typical delays are in the 200-2000 range, but definitely not more
than INT_MAX so we can fix this code by changing the return type to int
and adding a check for errors. While we're at it, lets change the error
code in ni_usb_t1_delay() from -1 and instead propagate the error from
ni_usb_write_registers().
Fixes: 4e127de14fa7 ("staging: gpib: Add National Instruments USB GPIB driver")
Signed-off-by: Rodrigo Gobbi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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| 039beaa5 | 17-Oct-2024 |
Everest K.C. <[email protected]> |
staging: gpib: Change return type and error code of fmh_gpib_get_dma_residue()
fmh_gpib_get_dma_residue() returns unsigned int with -1 as error code.
This error cannot be caught.
Fix this by changin
staging: gpib: Change return type and error code of fmh_gpib_get_dma_residue()
fmh_gpib_get_dma_residue() returns unsigned int with -1 as error code.
This error cannot be caught.
Fix this by changing the return type of the function to int and
returning the error code, that was captured. Also, change the data
type of variable residue to int in the function fmh_gpib_dma_read().
Fixes: 8e4841a0888c ("staging: gpib: Add Frank Mori Hess FPGA PCI GPIB driver")
Reported-by: Shuah Khan <[email protected]>
Signed-off-by: Everest K.C. <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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