diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/fdt.c | 141 | ||||
| -rw-r--r-- | drivers/of/of_reserved_mem.c | 3 | ||||
| -rw-r--r-- | drivers/of/platform.c | 3 | ||||
| -rw-r--r-- | drivers/of/unittest.c | 2 |
4 files changed, 58 insertions, 91 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index de893c9616a1..9cdf14b9aaab 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -38,7 +38,7 @@ * memory entries in the /memory node. This function may be called * any time after initial_boot_param is set. */ -void of_fdt_limit_memory(int limit) +void __init of_fdt_limit_memory(int limit) { int memory; int len; @@ -78,57 +78,6 @@ void of_fdt_limit_memory(int limit) } } -/** - * of_fdt_is_compatible - Return true if given node from the given blob has - * compat in its compatible list - * @blob: A device tree blob - * @node: node to test - * @compat: compatible string to compare with compatible list. - * - * On match, returns a non-zero value with smaller values returned for more - * specific compatible values. - */ -static int of_fdt_is_compatible(const void *blob, - unsigned long node, const char *compat) -{ - const char *cp; - int cplen; - unsigned long l, score = 0; - - cp = fdt_getprop(blob, node, "compatible", &cplen); - if (cp == NULL) - return 0; - while (cplen > 0) { - score++; - if (of_compat_cmp(cp, compat, strlen(compat)) == 0) - return score; - l = strlen(cp) + 1; - cp += l; - cplen -= l; - } - - return 0; -} - -/** - * of_fdt_is_big_endian - Return true if given node needs BE MMIO accesses - * @blob: A device tree blob - * @node: node to test - * - * Returns true if the node has a "big-endian" property, or if the kernel - * was compiled for BE *and* the node has a "native-endian" property. - * Returns false otherwise. - */ -bool of_fdt_is_big_endian(const void *blob, unsigned long node) -{ - if (fdt_getprop(blob, node, "big-endian", NULL)) - return true; - if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) && - fdt_getprop(blob, node, "native-endian", NULL)) - return true; - return false; -} - static bool of_fdt_device_is_available(const void *blob, unsigned long node) { const char *status = fdt_getprop(blob, node, "status", NULL); @@ -142,27 +91,6 @@ static bool of_fdt_device_is_available(const void *blob, unsigned long node) return false; } -/** - * of_fdt_match - Return true if node matches a list of compatible values - */ -int of_fdt_match(const void *blob, unsigned long node, - const char *const *compat) -{ - unsigned int tmp, score = 0; - - if (!compat) - return 0; - - while (*compat) { - tmp = of_fdt_is_compatible(blob, node, *compat); - if (tmp && (score == 0 || (tmp < score))) - score = tmp; - compat++; - } - - return score; -} - static void *unflatten_dt_alloc(void **mem, unsigned long size, unsigned long align) { @@ -535,7 +463,7 @@ EXPORT_SYMBOL_GPL(of_fdt_unflatten_tree); int __initdata dt_root_addr_cells; int __initdata dt_root_size_cells; -void *initial_boot_params; +void *initial_boot_params __ro_after_init; #ifdef CONFIG_OF_EARLY_FLATTREE @@ -551,7 +479,8 @@ static int __init __reserved_mem_reserve_reg(unsigned long node, phys_addr_t base, size; int len; const __be32 *prop; - int nomap, first = 1; + int first = 1; + bool nomap; prop = of_get_flat_dt_prop(node, "reg", &len); if (!prop) @@ -666,7 +595,7 @@ void __init early_init_fdt_scan_reserved_mem(void) fdt_get_mem_rsv(initial_boot_params, n, &base, &size); if (!size) break; - early_init_dt_reserve_memory_arch(base, size, 0); + early_init_dt_reserve_memory_arch(base, size, false); } of_scan_flat_dt(__fdt_scan_reserved_mem, NULL); @@ -684,7 +613,7 @@ void __init early_init_fdt_reserve_self(void) /* Reserve the dtb region */ early_init_dt_reserve_memory_arch(__pa(initial_boot_params), fdt_totalsize(initial_boot_params), - 0); + false); } /** @@ -758,7 +687,7 @@ int __init of_scan_flat_dt_subnodes(unsigned long parent, * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none */ -int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname) +int __init of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname) { return fdt_subnode_offset(initial_boot_params, node, uname); } @@ -772,14 +701,6 @@ unsigned long __init of_get_flat_dt_root(void) } /** - * of_get_flat_dt_size - Return the total size of the FDT - */ -int __init of_get_flat_dt_size(void) -{ - return fdt_totalsize(initial_boot_params); -} - -/** * of_get_flat_dt_prop - Given a node in the flat blob, return the property ptr * * This function can be used within scan_flattened_dt callback to get @@ -792,6 +713,38 @@ const void *__init of_get_flat_dt_prop(unsigned long node, const char *name, } /** + * of_fdt_is_compatible - Return true if given node from the given blob has + * compat in its compatible list + * @blob: A device tree blob + * @node: node to test + * @compat: compatible string to compare with compatible list. + * + * On match, returns a non-zero value with smaller values returned for more + * specific compatible values. + */ +static int of_fdt_is_compatible(const void *blob, + unsigned long node, const char *compat) +{ + const char *cp; + int cplen; + unsigned long l, score = 0; + + cp = fdt_getprop(blob, node, "compatible", &cplen); + if (cp == NULL) + return 0; + while (cplen > 0) { + score++; + if (of_compat_cmp(cp, compat, strlen(compat)) == 0) + return score; + l = strlen(cp) + 1; + cp += l; + cplen -= l; + } + + return 0; +} + +/** * of_flat_dt_is_compatible - Return true if given node has compat in compatible list * @node: node to test * @compat: compatible string to compare with compatible list. @@ -804,9 +757,21 @@ int __init of_flat_dt_is_compatible(unsigned long node, const char *compat) /** * of_flat_dt_match - Return true if node matches a list of compatible values */ -int __init of_flat_dt_match(unsigned long node, const char *const *compat) +static int __init of_flat_dt_match(unsigned long node, const char *const *compat) { - return of_fdt_match(initial_boot_params, node, compat); + unsigned int tmp, score = 0; + + if (!compat) + return 0; + + while (*compat) { + tmp = of_fdt_is_compatible(initial_boot_params, node, *compat); + if (tmp && (score == 0 || (tmp < score))) + score = tmp; + compat++; + } + + return score; } /** diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 89e190e94af7..7989703b883c 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -324,6 +324,9 @@ int of_reserved_mem_device_init_by_idx(struct device *dev, if (!target) return -ENODEV; + if (!of_device_is_available(target)) + return 0; + rmem = __find_rmem(target); of_node_put(target); diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 04ad312fd85b..efbff44581b3 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -92,8 +92,7 @@ static void of_device_make_bus_id(struct device *dev) reg = of_get_property(node, "reg", NULL); if (reg && (addr = of_translate_address(node, reg)) != OF_BAD_ADDR) { dev_set_name(dev, dev_name(dev) ? "%llx.%pOFn:%s" : "%llx.%pOFn", - (unsigned long long)addr, node, - dev_name(dev)); + addr, node, dev_name(dev)); return; } diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 3832a5de4602..e6b175370f2e 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1946,7 +1946,7 @@ static int unittest_i2c_mux_probe(struct i2c_client *client, { int i, nchans; struct device *dev = &client->dev; - struct i2c_adapter *adap = to_i2c_adapter(dev->parent); + struct i2c_adapter *adap = client->adapter; struct device_node *np = client->dev.of_node, *child; struct i2c_mux_core *muxc; u32 reg, max_reg; |