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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct gsc_hwmon_platform_data.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922175053.work.564-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
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Using flexible array is more straight forward. It
- saves 1 pointer in the 'gsc_hwmon_platform_data' structure
- saves an indirection when using this array
- saves some LoC and avoids some always spurious pointer arithmetic
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/61a23e1d642397cfcecc4ac3bb0ab485d257987d.1668936855.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add a fan sensor to report RPM's from a fan tach input.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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add a 16-bit pre-scaled voltage mode to adc and clarify that existing
pre-scaled mode is 24bit.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1591714640-10332-3-git-send-email-tharvey@gateworks.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The Gateworks System Controller has a hwmon sub-component that exposes
up to 16 ADC's, some of which are temperature sensors, others which are
voltage inputs. The ADC configuration (register mapping and name) is
configured via device-tree and varies board to board.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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