Character arrays can be considered empty strings (if they are immediately terminated), but they cannot be NULL.
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| @@ -18,7 +18,7 @@ · 17 unmodified lines | |||
| 18 | * struct gpiochip_info - Information about a certain GPIO chip | 18 | * struct gpiochip_info - Information about a certain GPIO chip |
| 19 | * @name: the Linux kernel name of this GPIO chip | 19 | * @name: the Linux kernel name of this GPIO chip |
| 20 | * @label: a functional name for this GPIO chip, such as a product | 20 | * @label: a functional name for this GPIO chip, such as a product |
| 21 | * number, may be NULL | 21 | * number, may be empty |
| 22 | * @lines: number of GPIO lines on this chip | 22 | * @lines: number of GPIO lines on this chip |
| 23 | */ | 23 | */ |
| 24 | struct gpiochip_info { | 24 | struct gpiochip_info { |
| @@ -44,10 +44,10 @@ struct gpiochip_info { · 19 unmodified lines | |||
| 44 | * @flags: various flags for this line | 44 | * @flags: various flags for this line |
| 45 | * @name: the name of this GPIO line, such as the output pin of the line on the | 45 | * @name: the name of this GPIO line, such as the output pin of the line on the |
| 46 | * chip, a rail or a pin header name on a board, as specified by the gpio | 46 | * chip, a rail or a pin header name on a board, as specified by the gpio |
| 47 | * chip, may be NULL | 47 | * chip, may be empty |
| 48 | * @consumer: a functional name for the consumer of this GPIO line as set by | 48 | * @consumer: a functional name for the consumer of this GPIO line as set by |
| 49 | * whatever is using it, will be NULL if there is no current user but may | 49 | * whatever is using it, will be empty if there is no current user but may |
| 50 | * also be NULL if the consumer doesn't set this up | 50 | * also be empty if the consumer doesn't set this up |
| 51 | */ | 51 | */ |
| 52 | struct gpioline_info { | 52 | struct gpioline_info { |
| 53 | __u32 line_offset; | 53 | __u32 line_offset; |