diff options
Diffstat (limited to 'arch/x86/include/asm/mrccache.h')
| -rw-r--r-- | arch/x86/include/asm/mrccache.h | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/arch/x86/include/asm/mrccache.h b/arch/x86/include/asm/mrccache.h index d6b7529073..b60d1171f7 100644 --- a/arch/x86/include/asm/mrccache.h +++ b/arch/x86/include/asm/mrccache.h @@ -66,19 +66,12 @@ int mrccache_reserve(void); * mrccache_get_region() - get MRC region on the SPI flash * * This gets MRC region whose offset and size are described in the device tree - * as a subnode to the SPI flash. If a non-NULL device pointer is supplied, - * this also probes the SPI flash device and returns its device pointer for - * the caller to use later. - * - * Be careful when calling this routine with a non-NULL device pointer: - * - driver model initialization must be complete - * - calling in the pre-relocation phase may bring some side effects during - * the SPI flash device probe (eg: for SPI controllers on a PCI bus, it - * triggers PCI bus enumeration during which insufficient memory issue - * might be exposed and it causes subsequent SPI flash probe fails). + * as a subnode to the SPI flash. This tries to find the SPI flash device + * (without probing it), falling back to looking for the devicetree node if + * driver model is not inited or the SPI flash is not found. * * @type: Type of MRC data to use - * @devp: Returns pointer to the SPI flash device + * @devp: Returns pointer to the SPI flash device, if found * @entry: Position and size of MRC cache in SPI flash * @return 0 if success, -ENOENT if SPI flash node does not exist in the * device tree, -EPERM if MRC region subnode does not exist in the device |