Searched hist:"109 b3a89a7c48405d61a05d7a1720581a4f1574c" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/include/linux/ |
| H A D | nvram.h | diff 109b3a89a7c48405d61a05d7a1720581a4f1574c Mon Jan 14 22:18:56 CST 2019 Finn Thain <fthain@telegraphics.com.au> char/nvram: Implement NVRAM read/write methods
Refactor the RTC "CMOS" NVRAM functions so that they can be used as
arch_nvram_ops methods. Checksumming logic is moved from the misc device
operations to the nvram read/write operations. This makes the misc device
implementation more generic.
This preserves the locking mechanism such that "read if checksum valid"
and "write and update checksum" remain atomic operations.
Some platforms implement byte-range read/write methods which are similar
to file_operations struct methods. Other platforms provide only
byte-at-a-time methods. The former are more efficient but may be
unavailable so fall back on the latter methods when necessary.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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| /openbmc/linux/drivers/char/ |
| H A D | nvram.c | diff 109b3a89a7c48405d61a05d7a1720581a4f1574c Mon Jan 14 22:18:56 CST 2019 Finn Thain <fthain@telegraphics.com.au> char/nvram: Implement NVRAM read/write methods
Refactor the RTC "CMOS" NVRAM functions so that they can be used as
arch_nvram_ops methods. Checksumming logic is moved from the misc device
operations to the nvram read/write operations. This makes the misc device
implementation more generic.
This preserves the locking mechanism such that "read if checksum valid"
and "write and update checksum" remain atomic operations.
Some platforms implement byte-range read/write methods which are similar
to file_operations struct methods. Other platforms provide only
byte-at-a-time methods. The former are more efficient but may be
unavailable so fall back on the latter methods when necessary.
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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