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-rw-r--r--drivers/firmware/dmi-sysfs.c2
-rw-r--r--drivers/firmware/dmi_scan.c64
-rw-r--r--drivers/firmware/edd.c8
-rw-r--r--drivers/firmware/iscsi_ibft.c5
-rw-r--r--drivers/firmware/psci.c55
-rw-r--r--drivers/firmware/qemu_fw_cfg.c4
6 files changed, 87 insertions, 51 deletions
diff --git a/drivers/firmware/dmi-sysfs.c b/drivers/firmware/dmi-sysfs.c
index d5de6ee8466d..ecf2eeb5f6f9 100644
--- a/drivers/firmware/dmi-sysfs.c
+++ b/drivers/firmware/dmi-sysfs.c
@@ -652,7 +652,7 @@ static int __init dmi_sysfs_init(void)
int val;
if (!dmi_kobj) {
- pr_err("dmi-sysfs: dmi entry is absent.\n");
+ pr_debug("dmi-sysfs: dmi entry is absent.\n");
error = -ENODATA;
goto err;
}
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 783041964439..e763e1484331 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -18,7 +18,7 @@ EXPORT_SYMBOL_GPL(dmi_kobj);
* of and an antecedent to, SMBIOS, which stands for System
* Management BIOS. See further: http://www.dmtf.org/standards
*/
-static const char dmi_empty_string[] = " ";
+static const char dmi_empty_string[] = "";
static u32 dmi_ver __initdata;
static u32 dmi_len;
@@ -26,11 +26,6 @@ static u16 dmi_num;
static u8 smbios_entry_point[32];
static int smbios_entry_point_size;
-/*
- * Catch too early calls to dmi_check_system():
- */
-static int dmi_initialized;
-
/* DMI system identification string used during boot */
static char dmi_ids_string[128] __initdata;
@@ -44,25 +39,21 @@ static int dmi_memdev_nr;
static const char * __init dmi_string_nosave(const struct dmi_header *dm, u8 s)
{
const u8 *bp = ((u8 *) dm) + dm->length;
+ const u8 *nsp;
if (s) {
- s--;
- while (s > 0 && *bp) {
+ while (--s > 0 && *bp)
bp += strlen(bp) + 1;
- s--;
- }
- if (*bp != 0) {
- size_t len = strlen(bp)+1;
- size_t cmp_len = len > 8 ? 8 : len;
-
- if (!memcmp(bp, dmi_empty_string, cmp_len))
- return dmi_empty_string;
+ /* Strings containing only spaces are considered empty */
+ nsp = bp;
+ while (*nsp == ' ')
+ nsp++;
+ if (*nsp != '\0')
return bp;
- }
}
- return "";
+ return dmi_empty_string;
}
static const char * __init dmi_string(const struct dmi_header *dm, u8 s)
@@ -633,7 +624,7 @@ void __init dmi_scan_machine(void)
if (!dmi_smbios3_present(buf)) {
dmi_available = 1;
- goto out;
+ return;
}
}
if (efi.smbios == EFI_INVALID_TABLE_ADDR)
@@ -651,7 +642,7 @@ void __init dmi_scan_machine(void)
if (!dmi_present(buf)) {
dmi_available = 1;
- goto out;
+ return;
}
} else if (IS_ENABLED(CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK)) {
p = dmi_early_remap(0xF0000, 0x10000);
@@ -668,7 +659,7 @@ void __init dmi_scan_machine(void)
if (!dmi_smbios3_present(buf)) {
dmi_available = 1;
dmi_early_unmap(p, 0x10000);
- goto out;
+ return;
}
memcpy(buf, buf + 16, 16);
}
@@ -686,7 +677,7 @@ void __init dmi_scan_machine(void)
if (!dmi_present(buf)) {
dmi_available = 1;
dmi_early_unmap(p, 0x10000);
- goto out;
+ return;
}
memcpy(buf, buf + 16, 16);
}
@@ -694,8 +685,6 @@ void __init dmi_scan_machine(void)
}
error:
pr_info("DMI not present or invalid.\n");
- out:
- dmi_initialized = 1;
}
static ssize_t raw_table_read(struct file *file, struct kobject *kobj,
@@ -715,10 +704,8 @@ static int __init dmi_init(void)
u8 *dmi_table;
int ret = -ENOMEM;
- if (!dmi_available) {
- ret = -ENODATA;
- goto err;
- }
+ if (!dmi_available)
+ return 0;
/*
* Set up dmi directory at /sys/firmware/dmi. This entry should stay
@@ -784,19 +771,20 @@ static bool dmi_matches(const struct dmi_system_id *dmi)
{
int i;
- WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n");
-
for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) {
int s = dmi->matches[i].slot;
if (s == DMI_NONE)
break;
if (dmi_ident[s]) {
- if (!dmi->matches[i].exact_match &&
- strstr(dmi_ident[s], dmi->matches[i].substr))
- continue;
- else if (dmi->matches[i].exact_match &&
- !strcmp(dmi_ident[s], dmi->matches[i].substr))
- continue;
+ if (dmi->matches[i].exact_match) {
+ if (!strcmp(dmi_ident[s],
+ dmi->matches[i].substr))
+ continue;
+ } else {
+ if (strstr(dmi_ident[s],
+ dmi->matches[i].substr))
+ continue;
+ }
}
/* No match */
@@ -826,6 +814,8 @@ static bool dmi_is_end_of_table(const struct dmi_system_id *dmi)
* Walk the blacklist table running matching functions until someone
* returns non zero or we hit the end. Callback function is called for
* each successful match. Returns the number of matches.
+ *
+ * dmi_scan_machine must be called before this function is called.
*/
int dmi_check_system(const struct dmi_system_id *list)
{
@@ -854,6 +844,8 @@ EXPORT_SYMBOL(dmi_check_system);
*
* Walk the blacklist table until the first match is found. Return the
* pointer to the matching entry or NULL if there's no match.
+ *
+ * dmi_scan_machine must be called before this function is called.
*/
const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list)
{
diff --git a/drivers/firmware/edd.c b/drivers/firmware/edd.c
index e22957665808..60a8f1363a10 100644
--- a/drivers/firmware/edd.c
+++ b/drivers/firmware/edd.c
@@ -669,10 +669,10 @@ edd_get_pci_dev(struct edd_device *edev)
struct edd_info *info = edd_dev_get_info(edev);
if (edd_dev_is_type(edev, "PCI") || edd_dev_is_type(edev, "XPRS")) {
- return pci_get_bus_and_slot(info->params.interface_path.pci.bus,
- PCI_DEVFN(info->params.interface_path.pci.slot,
- info->params.interface_path.pci.
- function));
+ return pci_get_domain_bus_and_slot(0,
+ info->params.interface_path.pci.bus,
+ PCI_DEVFN(info->params.interface_path.pci.slot,
+ info->params.interface_path.pci.function));
}
return NULL;
}
diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c
index 14042a64bdd5..6bc8e6640d71 100644
--- a/drivers/firmware/iscsi_ibft.c
+++ b/drivers/firmware/iscsi_ibft.c
@@ -719,8 +719,9 @@ static int __init ibft_create_kobject(struct acpi_table_ibft *header,
* executes only devices which are in domain 0. Furthermore, the
* iBFT spec doesn't have a domain id field :-(
*/
- pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
- (nic->pci_bdf & 0xff));
+ pci_dev = pci_get_domain_bus_and_slot(0,
+ (nic->pci_bdf & 0xff00) >> 8,
+ (nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&boot_kobj->kobj,
&pci_dev->dev.kobj, "device");
diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
index 8b25d31e8401..c80ec1d03274 100644
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -59,7 +59,10 @@ bool psci_tos_resident_on(int cpu)
return cpu == resident_cpu;
}
-struct psci_operations psci_ops;
+struct psci_operations psci_ops = {
+ .conduit = PSCI_CONDUIT_NONE,
+ .smccc_version = SMCCC_VERSION_1_0,
+};
typedef unsigned long (psci_fn)(unsigned long, unsigned long,
unsigned long, unsigned long);
@@ -210,6 +213,22 @@ static unsigned long psci_migrate_info_up_cpu(void)
0, 0, 0);
}
+static void set_conduit(enum psci_conduit conduit)
+{
+ switch (conduit) {
+ case PSCI_CONDUIT_HVC:
+ invoke_psci_fn = __invoke_psci_fn_hvc;
+ break;
+ case PSCI_CONDUIT_SMC:
+ invoke_psci_fn = __invoke_psci_fn_smc;
+ break;
+ default:
+ WARN(1, "Unexpected PSCI conduit %d\n", conduit);
+ }
+
+ psci_ops.conduit = conduit;
+}
+
static int get_set_conduit_method(struct device_node *np)
{
const char *method;
@@ -222,9 +241,9 @@ static int get_set_conduit_method(struct device_node *np)
}
if (!strcmp("hvc", method)) {
- invoke_psci_fn = __invoke_psci_fn_hvc;
+ set_conduit(PSCI_CONDUIT_HVC);
} else if (!strcmp("smc", method)) {
- invoke_psci_fn = __invoke_psci_fn_smc;
+ set_conduit(PSCI_CONDUIT_SMC);
} else {
pr_warn("invalid \"method\" property: %s\n", method);
return -EINVAL;
@@ -493,6 +512,31 @@ static void __init psci_init_migrate(void)
pr_info("Trusted OS resident on physical CPU 0x%lx\n", cpuid);
}
+static void __init psci_init_smccc(void)
+{
+ u32 ver = ARM_SMCCC_VERSION_1_0;
+ int feature;
+
+ feature = psci_features(ARM_SMCCC_VERSION_FUNC_ID);
+
+ if (feature != PSCI_RET_NOT_SUPPORTED) {
+ u32 ret;
+ ret = invoke_psci_fn(ARM_SMCCC_VERSION_FUNC_ID, 0, 0, 0);
+ if (ret == ARM_SMCCC_VERSION_1_1) {
+ psci_ops.smccc_version = SMCCC_VERSION_1_1;
+ ver = ret;
+ }
+ }
+
+ /*
+ * Conveniently, the SMCCC and PSCI versions are encoded the
+ * same way. No, this isn't accidental.
+ */
+ pr_info("SMC Calling Convention v%d.%d\n",
+ PSCI_VERSION_MAJOR(ver), PSCI_VERSION_MINOR(ver));
+
+}
+
static void __init psci_0_2_set_functions(void)
{
pr_info("Using standard PSCI v0.2 function IDs\n");
@@ -541,6 +585,7 @@ static int __init psci_probe(void)
psci_init_migrate();
if (PSCI_VERSION_MAJOR(ver) >= 1) {
+ psci_init_smccc();
psci_init_cpu_suspend();
psci_init_system_suspend();
}
@@ -654,9 +699,9 @@ int __init psci_acpi_init(void)
pr_info("probing for conduit method from ACPI.\n");
if (acpi_psci_use_hvc())
- invoke_psci_fn = __invoke_psci_fn_hvc;
+ set_conduit(PSCI_CONDUIT_HVC);
else
- invoke_psci_fn = __invoke_psci_fn_smc;
+ set_conduit(PSCI_CONDUIT_SMC);
return psci_probe();
}
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c
index deb483064f53..a41b572eeeb1 100644
--- a/drivers/firmware/qemu_fw_cfg.c
+++ b/drivers/firmware/qemu_fw_cfg.c
@@ -694,10 +694,8 @@ static int fw_cfg_cmdline_set(const char *arg, const struct kernel_param *kp)
*/
fw_cfg_cmdline_dev = platform_device_register_simple("fw_cfg",
PLATFORM_DEVID_NONE, res, processed);
- if (IS_ERR(fw_cfg_cmdline_dev))
- return PTR_ERR(fw_cfg_cmdline_dev);
- return 0;
+ return PTR_ERR_OR_ZERO(fw_cfg_cmdline_dev);
}
static int fw_cfg_cmdline_get(char *buf, const struct kernel_param *kp)
generated by cgit (git 2.34.1) at 2024-06-10 03:57:02 +0000