From 14e2abb732e485ee57d9d5b2cb8884652238e5c1 Mon Sep 17 00:00:00 2001 From: Kleber Sacilotto de Souza Date: Mon, 3 Feb 2014 13:31:03 -0200 Subject: of: fix PCI bus match for PCIe slots On IBM pseries systems the device_type device-tree property of a PCIe bridge contains the string "pciex". The of_bus_pci_match() function was looking only for "pci" on this property, so in such cases the bus matching code was falling back to the default bus, causing problems on functions that should be using "assigned-addresses" for region address translation. This patch fixes the problem by also looking for "pciex" on the PCI bus match function. v2: added comment Signed-off-by: Kleber Sacilotto de Souza Acked-by: Grant Likely Cc: stable@vger.kernel.org Signed-off-by: Rob Herring --- drivers/of/address.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/of') diff --git a/drivers/of/address.c b/drivers/of/address.c index d3dd41c840f1..1a54f1ffaadb 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -99,11 +99,12 @@ static unsigned int of_bus_default_get_flags(const __be32 *addr) static int of_bus_pci_match(struct device_node *np) { /* + * "pciex" is PCI Express * "vci" is for the /chaos bridge on 1st-gen PCI powermacs * "ht" is hypertransport */ - return !strcmp(np->type, "pci") || !strcmp(np->type, "vci") || - !strcmp(np->type, "ht"); + return !strcmp(np->type, "pci") || !strcmp(np->type, "pciex") || + !strcmp(np->type, "vci") || !strcmp(np->type, "ht"); } static void of_bus_pci_count_cells(struct device_node *np, -- cgit v1.2.1 From 4e8ca6ee3a5d0e0f4c0cb32e43dc3d69e79e5a76 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Fri, 14 Feb 2014 13:22:45 +0800 Subject: Revert "OF: base: match each node compatible against all given matches first" This reverts commit 105353145eafb3ea919f5cdeb652a9d8f270228e. Stephen Chivers reported this is broken as we will get a match entry '.type = "serial"' instead of the '.compatible = "ns16550"' in the following scenario: serial0: serial@4500 { compatible = "fsl,ns16550", "ns16550"; } struct of_device_id of_platform_serial_table[] = { { .compatible = "ns8250", .data = (void *)PORT_8250, }, { .compatible = "ns16450", .data = (void *)PORT_16450, }, { .compatible = "ns16550a", .data = (void *)PORT_16550A, }, { .compatible = "ns16550", .data = (void *)PORT_16550, }, { .compatible = "ns16750", .data = (void *)PORT_16750, }, { .compatible = "ns16850", .data = (void *)PORT_16850, }, ... { .type = "serial", .data = (void *)PORT_UNKNOWN, }, { /* end of list */ }, }; So just revert this patch, we will use another implementation to find the best compatible match in a follow-on patch. Reported-by: Stephen N Chivers Cc: Sebastian Hesselbarth Signed-off-by: Kevin Hao Signed-off-by: Rob Herring --- drivers/of/base.c | 53 ++++++++++++++++------------------------------------- 1 file changed, 16 insertions(+), 37 deletions(-) (limited to 'drivers/of') diff --git a/drivers/of/base.c b/drivers/of/base.c index ff85450d5683..ba195fbce4c6 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -734,42 +734,24 @@ static const struct of_device_id *__of_match_node(const struct of_device_id *matches, const struct device_node *node) { - const char *cp; - int cplen, l; - if (!matches) return NULL; - cp = __of_get_property(node, "compatible", &cplen); - do { - const struct of_device_id *m = matches; - - /* Check against matches with current compatible string */ - while (m->name[0] || m->type[0] || m->compatible[0]) { - int match = 1; - if (m->name[0]) - match &= node->name - && !strcmp(m->name, node->name); - if (m->type[0]) - match &= node->type - && !strcmp(m->type, node->type); - if (m->compatible[0]) - match &= cp - && !of_compat_cmp(m->compatible, cp, - strlen(m->compatible)); - if (match) - return m; - m++; - } - - /* Get node's next compatible string */ - if (cp) { - l = strlen(cp) + 1; - cp += l; - cplen -= l; - } - } while (cp && (cplen > 0)); - + while (matches->name[0] || matches->type[0] || matches->compatible[0]) { + int match = 1; + if (matches->name[0]) + match &= node->name + && !strcmp(matches->name, node->name); + if (matches->type[0]) + match &= node->type + && !strcmp(matches->type, node->type); + if (matches->compatible[0]) + match &= __of_device_is_compatible(node, + matches->compatible); + if (match) + return matches; + matches++; + } return NULL; } @@ -778,10 +760,7 @@ const struct of_device_id *__of_match_node(const struct of_device_id *matches, * @matches: array of of device match structures to search in * @node: the of device structure to match against * - * Low level utility function used by device matching. Matching order - * is to compare each of the node's compatibles with all given matches - * first. This implies node's compatible is sorted from specific to - * generic while matches can be in any order. + * Low level utility function used by device matching. */ const struct of_device_id *of_match_node(const struct of_device_id *matches, const struct device_node *node) -- cgit v1.2.1 From ce11c436720cdb8437340be93b2f5efe23ce3e1c Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 13 Feb 2014 13:14:48 -0800 Subject: net: of_mdio: fix of_set_phy_supported after driver probing Commit 8fdade4 ("net: of_mdio: parse "max-speed" property to set PHY supported features") introduced a typo in of_set_phy_supported for the first assignment of phydev->supported which will not effectively limit the PHY device supported features bits if the PHY driver contains "higher" features (e.g: max-speed = <100> and PHY driver has PHY_GBIT_FEATURES set). Fix this by making sure that the very first thing is to reset to sane defaults (PHY_BASIC_FEATURES) and then progressively add speed features as we parse them. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/of') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 875b7b6f0d2a..495faccba763 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -24,7 +24,11 @@ MODULE_LICENSE("GPL"); static void of_set_phy_supported(struct phy_device *phydev, u32 max_speed) { - phydev->supported |= PHY_DEFAULT_FEATURES; + /* The default values for phydev->supported are provided by the PHY + * driver "features" member, we want to reset to sane defaults fist + * before supporting higher speeds. + */ + phydev->supported &= PHY_DEFAULT_FEATURES; switch (max_speed) { default: -- cgit v1.2.1 From 06b29e76a74b2373e6f8b5a7938b3630b9ae98b2 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Fri, 14 Feb 2014 13:22:46 +0800 Subject: of: search the best compatible match first in __of_match_node() Currently, of_match_node compares each given match against all node's compatible strings with of_device_is_compatible. To achieve multiple compatible strings per node with ordering from specific to generic, this requires given matches to be ordered from specific to generic. For most of the drivers this is not true and also an alphabetical ordering is more sane there. Therefore, this patch introduces a function to match each of the node's compatible strings against all given compatible matches without type and name first, before checking the next compatible string. This implies that node's compatibles are ordered from specific to generic while given matches can be in any order. If we fail to find such a match entry, then fall-back to the old method in order to keep compatibility. Cc: Sebastian Hesselbarth Signed-off-by: Kevin Hao Tested-by: Stephen Chivers Signed-off-by: Rob Herring --- drivers/of/base.c | 43 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) (limited to 'drivers/of') diff --git a/drivers/of/base.c b/drivers/of/base.c index ba195fbce4c6..10b51106c854 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -730,13 +730,49 @@ out: } EXPORT_SYMBOL(of_find_node_with_property); +static const struct of_device_id * +of_match_compatible(const struct of_device_id *matches, + const struct device_node *node) +{ + const char *cp; + int cplen, l; + const struct of_device_id *m; + + cp = __of_get_property(node, "compatible", &cplen); + while (cp && (cplen > 0)) { + m = matches; + while (m->name[0] || m->type[0] || m->compatible[0]) { + /* Only match for the entries without type and name */ + if (m->name[0] || m->type[0] || + of_compat_cmp(m->compatible, cp, + strlen(m->compatible))) + m++; + else + return m; + } + + /* Get node's next compatible string */ + l = strlen(cp) + 1; + cp += l; + cplen -= l; + } + + return NULL; +} + static const struct of_device_id *__of_match_node(const struct of_device_id *matches, const struct device_node *node) { + const struct of_device_id *m; + if (!matches) return NULL; + m = of_match_compatible(matches, node); + if (m) + return m; + while (matches->name[0] || matches->type[0] || matches->compatible[0]) { int match = 1; if (matches->name[0]) @@ -760,7 +796,12 @@ const struct of_device_id *__of_match_node(const struct of_device_id *matches, * @matches: array of of device match structures to search in * @node: the of device structure to match against * - * Low level utility function used by device matching. + * Low level utility function used by device matching. We have two ways + * of matching: + * - Try to find the best compatible match by comparing each compatible + * string of device node with all the given matches respectively. + * - If the above method failed, then try to match the compatible by using + * __of_device_is_compatible() besides the match in type and name. */ const struct of_device_id *of_match_node(const struct of_device_id *matches, const struct device_node *node) -- cgit v1.2.1 From f15c586d1d9d99b04712d2b2eeee31ab29db77ff Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 18 Feb 2014 12:16:58 +0000 Subject: of_mdio: fix phy interrupt passing The of_mdiobus_register_phy() is not setting phy->irq thus causing some drivers to incorrectly assume that the PHY does not have an IRQ associated with it. Not only do some drivers report no IRQ they do not install an interrupt handler for the PHY. Simplify the code setting irq and set the phy->irq at the same time so that we cover the following issues, which should cover all the cases the code will find: - Set phy->irq if node has irq property and mdio->irq is NULL - Set phy->irq if node has no irq and mdio->irq is not NULL - Leave phy->irq as PHY_POLL default if none of the above This fixes the issue: net eth0: attached PHY 1 (IRQ -1) to driver Micrel KSZ8041RNLI to the correct: net eth0: attached PHY 1 (IRQ 416) to driver Micrel KSZ8041RNLI Signed-off-by: Ben Dooks Signed-off-by: David S. Miller --- drivers/of/of_mdio.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers/of') diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 495faccba763..5b3c24f3cde5 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -48,7 +48,7 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi { struct phy_device *phy; bool is_c45; - int rc, prev_irq; + int rc; u32 max_speed = 0; is_c45 = of_device_is_compatible(child, @@ -58,12 +58,14 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, struct device_node *chi if (!phy || IS_ERR(phy)) return 1; - if (mdio->irq) { - prev_irq = mdio->irq[addr]; - mdio->irq[addr] = - irq_of_parse_and_map(child, 0); - if (!mdio->irq[addr]) - mdio->irq[addr] = prev_irq; + rc = irq_of_parse_and_map(child, 0); + if (rc > 0) { + phy->irq = rc; + if (mdio->irq) + mdio->irq[addr] = rc; + } else { + if (mdio->irq) + phy->irq = mdio->irq[addr]; } /* Associate the OF node with the device structure so it -- cgit v1.2.1