From patchwork Sun Feb 18 19:18:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ricardo B. 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Marliere" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marliere.net; s=2024; t=1708283854; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F8qO94QSFDmkAfe4dTVfqhOrpLyIFW/SZ4BSF/6KA3Y=; b=NJeG1C0WWBxnPQSqYr72KYe2qn9gnvlvWTlC2CEqn6ZUYhZHpdt76a7rWt75PFPJeCXMxS +WEyIFamykosXa9KnRT9Z9thP644hl12taMO2oFYBNyr0yt6K6Dw290iep+Rh9xwG34ZUC gz1vQANWK8RE80UkArTx0LyVR+uINAmwlYJ+8O+6vYY4gnCcfUWojvX6XzW2arnJkp7Xpl gtFKOSyVDv4BcIe6VryQSTATl+zrpDc4wdDEwRFGeB6SpnhM0TWDsThE9ImcPzuiecsG1h Qi9jHzOO91j8H0Goot9+3G6Z01T9STacemd+XoZmmTeoshL5fELq8rqs/l6U2w== Authentication-Results: ORIGINATING; auth=pass smtp.auth=ricardo@marliere.net smtp.mailfrom=ricardo@marliere.net Date: Sun, 18 Feb 2024 16:18:09 -0300 Subject: [PATCH 1/4] usb: typec: constify the struct device_type usage Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240218-device_cleanup-usb-v1-1-77423c4da262@marliere.net> References: <20240218-device_cleanup-usb-v1-0-77423c4da262@marliere.net> In-Reply-To: <20240218-device_cleanup-usb-v1-0-77423c4da262@marliere.net> To: Heikki Krogerus , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, "Ricardo B. Marliere" X-Developer-Signature: v=1; a=openpgp-sha256; l=4971; i=ricardo@marliere.net; h=from:subject:message-id; bh=t6x/ZRYulTG708GhFefbeSEFl1szUQdpUP2dWsVwTs4=; b=owEBbQKS/ZANAwAKAckLinxjhlimAcsmYgBl0lf1czi/cExGsCNDi2qIVX6RXMBwDiC1OQwzK yS/12GPOkiJAjMEAAEKAB0WIQQDCo6eQk7jwGVXh+HJC4p8Y4ZYpgUCZdJX9QAKCRDJC4p8Y4ZY pqwnD/0XxI+dN1COkr7ACdhtjVtszHj+xU+RKB8lXEk+PZLk/4bIr45gYXtydNAxzryTKrZf7Rq yoOubCsjHv9wRILA3JGcygk4kSTY+q/nODzUeLRHHPeEPbs4yhqieGDT2kBMpbhR1VRHWfOKKc8 tJvyP5mGQXQLBAjwoIqONArMu0mdO2iBnNGqe2M/VJbrT//sQPJDPQIBr46DujGWu1iMxx1c0KB 1mNpXQ6efUs2Hl1aJ19y68fSl6+RJq1bD/d3zO+N4Nr8pg3UGRXNFcBFiEtkmaFDG4Mt+xiYWjf FmxiLNi06D9Brz3aFe6rHLOPSiq86E+98kwwEzOiaYJyaJnJH0UudxYKAgJF9OuPQan1G9SpdR5 Ml31uIsqItk/pXrWtznMc2GrJsu2JK4eOnW53pOcdPCDIedhRhn4U9vOCN+q1/v58/T40VoQCNN HyCKVGhueh89XfgIF4UsQu+dhGXH5icL7Hjfvr5hjmw01BhJ0j0zkbvvjwsvtwaUyUS2hkYwM1M EJeMo8zjudD4gzpVexEkURuQS4dXajXAnUZsO5CpDC/AW7ztHdPk2oQUcnNhod5QD+4tCu1Yl36 DDteNKBWgvXl/wCGlq9NHx/+9UlYwZ7Qd3mPTQQihrPtpzu+F9OZINQB2dZq8VvB+/06P11d5f0 nXykaZGu4VxQIPA== X-Developer-Key: i=ricardo@marliere.net; a=openpgp; fpr=030A8E9E424EE3C0655787E1C90B8A7C638658A6 Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move all the device_type variables in use by the driver to be constant structures as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Ricardo B. Marliere Acked-by: Heikki Krogerus --- drivers/usb/typec/pd.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/usb/typec/pd.c b/drivers/usb/typec/pd.c index b9cca2be76fc..d78c04a421bc 100644 --- a/drivers/usb/typec/pd.c +++ b/drivers/usb/typec/pd.c @@ -157,7 +157,7 @@ static const struct attribute_group source_fixed_supply_group = { }; __ATTRIBUTE_GROUPS(source_fixed_supply); -static struct device_type source_fixed_supply_type = { +static const struct device_type source_fixed_supply_type = { .name = "pdo", .release = pdo_release, .groups = source_fixed_supply_groups, @@ -182,7 +182,7 @@ static const struct attribute_group sink_fixed_supply_group = { }; __ATTRIBUTE_GROUPS(sink_fixed_supply); -static struct device_type sink_fixed_supply_type = { +static const struct device_type sink_fixed_supply_type = { .name = "pdo", .release = pdo_release, .groups = sink_fixed_supply_groups, @@ -213,7 +213,7 @@ static struct attribute *source_variable_supply_attrs[] = { }; ATTRIBUTE_GROUPS(source_variable_supply); -static struct device_type source_variable_supply_type = { +static const struct device_type source_variable_supply_type = { .name = "pdo", .release = pdo_release, .groups = source_variable_supply_groups, @@ -227,7 +227,7 @@ static struct attribute *sink_variable_supply_attrs[] = { }; ATTRIBUTE_GROUPS(sink_variable_supply); -static struct device_type sink_variable_supply_type = { +static const struct device_type sink_variable_supply_type = { .name = "pdo", .release = pdo_release, .groups = sink_variable_supply_groups, @@ -258,7 +258,7 @@ static struct attribute *source_battery_attrs[] = { }; ATTRIBUTE_GROUPS(source_battery); -static struct device_type source_battery_type = { +static const struct device_type source_battery_type = { .name = "pdo", .release = pdo_release, .groups = source_battery_groups, @@ -272,7 +272,7 @@ static struct attribute *sink_battery_attrs[] = { }; ATTRIBUTE_GROUPS(sink_battery); -static struct device_type sink_battery_type = { +static const struct device_type sink_battery_type = { .name = "pdo", .release = pdo_release, .groups = sink_battery_groups, @@ -339,7 +339,7 @@ static struct attribute *source_pps_attrs[] = { }; ATTRIBUTE_GROUPS(source_pps); -static struct device_type source_pps_type = { +static const struct device_type source_pps_type = { .name = "pdo", .release = pdo_release, .groups = source_pps_groups, @@ -353,7 +353,7 @@ static struct attribute *sink_pps_attrs[] = { }; ATTRIBUTE_GROUPS(sink_pps); -static struct device_type sink_pps_type = { +static const struct device_type sink_pps_type = { .name = "pdo", .release = pdo_release, .groups = sink_pps_groups, @@ -371,30 +371,30 @@ static const char * const apdo_supply_name[] = { [APDO_TYPE_PPS] = "programmable_supply", }; -static struct device_type *source_type[] = { +static const struct device_type *source_type[] = { [PDO_TYPE_FIXED] = &source_fixed_supply_type, [PDO_TYPE_BATT] = &source_battery_type, [PDO_TYPE_VAR] = &source_variable_supply_type, }; -static struct device_type *source_apdo_type[] = { +static const struct device_type *source_apdo_type[] = { [APDO_TYPE_PPS] = &source_pps_type, }; -static struct device_type *sink_type[] = { +static const struct device_type *sink_type[] = { [PDO_TYPE_FIXED] = &sink_fixed_supply_type, [PDO_TYPE_BATT] = &sink_battery_type, [PDO_TYPE_VAR] = &sink_variable_supply_type, }; -static struct device_type *sink_apdo_type[] = { +static const struct device_type *sink_apdo_type[] = { [APDO_TYPE_PPS] = &sink_pps_type, }; /* REVISIT: Export when EPR_*_Capabilities need to be supported. */ static int add_pdo(struct usb_power_delivery_capabilities *cap, u32 pdo, int position) { - struct device_type *type; + const struct device_type *type; const char *name; struct pdo *p; int ret; @@ -460,7 +460,7 @@ static void pd_capabilities_release(struct device *dev) kfree(to_usb_power_delivery_capabilities(dev)); } -static struct device_type pd_capabilities_type = { +static const struct device_type pd_capabilities_type = { .name = "capabilities", .release = pd_capabilities_release, }; @@ -575,7 +575,7 @@ static void pd_release(struct device *dev) kfree(pd); } -static struct device_type pd_type = { +static const struct device_type pd_type = { .name = "usb_power_delivery", .release = pd_release, .groups = pd_groups, From patchwork Sun Feb 18 19:18:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ricardo B. 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Move the usb_phy_dev_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Ricardo B. Marliere --- drivers/usb/phy/phy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c index 4b468bde19cf..06e0fb23566c 100644 --- a/drivers/usb/phy/phy.c +++ b/drivers/usb/phy/phy.c @@ -699,7 +699,7 @@ int usb_add_phy(struct usb_phy *x, enum usb_phy_type type) } EXPORT_SYMBOL_GPL(usb_add_phy); -static struct device_type usb_phy_dev_type = { +static const struct device_type usb_phy_dev_type = { .name = "usb_phy", .uevent = usb_phy_uevent, }; From patchwork Sun Feb 18 19:18:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ricardo B. 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Move the gadget_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Ricardo B. Marliere --- drivers/usb/gadget/function/u_ether.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index 3c5a6f6ac341..444212c0b5a9 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -718,7 +718,7 @@ static const struct net_device_ops eth_netdev_ops = { .ndo_validate_addr = eth_validate_addr, }; -static struct device_type gadget_type = { +static const struct device_type gadget_type = { .name = "gadget", }; From patchwork Sun Feb 18 19:18:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ricardo B. 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Marliere" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marliere.net; s=2024; t=1708283864; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vQNRYm3ukxsOLCb4b7JJwL+j5XGiWOnosPqQUAzHJIQ=; b=jxr11ZnvAo4cR83d6om9WnVVOUns/mfSWeHif+O75tci1hSFO8RfZ8Op/hwvqqh+01nE2/ 95WQTinlCXTX2v7qbqFfxj33V+g026d9ixsPkn3/+dH552dokspiuT7x/BbhTo6jpcJu4h Dd2LvJDrp8qXO+ZjDWR9NSVTCjYUMweQA6g7jTkZAcFUjXIe04UbSkdIK1OZRkfOtBQ8A+ SDM/vGT340u7flzNWJIGYPvSUTeF2jJTi5rEJ9649q7+X71dcdOheRNhIr4ninfFwsE3gz +b85WgFSovQ7OVEz8nPm3248+GYog+GFpLA5tJlO0AUF10nQnCVpUcrCHw4M0g== Authentication-Results: ORIGINATING; auth=pass smtp.auth=ricardo@marliere.net smtp.mailfrom=ricardo@marliere.net Date: Sun, 18 Feb 2024 16:18:12 -0300 Subject: [PATCH 4/4] usb: core: constify the struct device_type usage Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240218-device_cleanup-usb-v1-4-77423c4da262@marliere.net> References: <20240218-device_cleanup-usb-v1-0-77423c4da262@marliere.net> In-Reply-To: <20240218-device_cleanup-usb-v1-0-77423c4da262@marliere.net> To: Heikki Krogerus , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, "Ricardo B. Marliere" X-Developer-Signature: v=1; a=openpgp-sha256; l=3413; i=ricardo@marliere.net; h=from:subject:message-id; bh=PlDZ/DQXM/07PMDcTyBhIrDP9W36zYqNuPUo0TzKbvE=; b=owEBbQKS/ZANAwAKAckLinxjhlimAcsmYgBl0lf1mygX1QLxHNFMAm/dvDIotCaFbkuZjMfCB AtIDT8fKbeJAjMEAAEKAB0WIQQDCo6eQk7jwGVXh+HJC4p8Y4ZYpgUCZdJX9QAKCRDJC4p8Y4ZY pjfYD/49rP6j1XNXmK3NjDC1kryNy/X232I7AlecWd+LG6BquAUQA1H/l/STXE6NccXSXdK5SOE 4Db5GT6YeX2Vh6VF02/wUDXUMqVtdWyq0tyRgUKJ872+T2KFM+jcgMIfyi7Urg7EwTJ029CgYIZ dBjZAdLKk1AZr2CzoRUzxPi+dMbE8Ah0qWghMU4Lg67ift1V9FDuApGQaIFKaRiqDDehdptmGaF v7aIEwsXbbqOfvbWLcMz4ncJv32fhA0UwxT8qCTUZ3+P1ClXC45ycsJV3X27pfC44Oej7OpUeEc lSP4/iryIyy3UqTmmiFFS/g+Ud4eTaJNMKsSL6AY49DcRzywrS5kO/7+SuW7AvecMnTNMs1SLX0 ktGt8125IK658Bsde2d8lQ9YEeu5OSM118abbTg9lDwKTpbP02kI0iFO7TtA2ISXcOjWf8Nb1cu 7jCs+o3AlTcC6kDzNJ4tObqUDuT/czEDRLUDdG8T8xpHCccKVj3tHMwCscP80cuC5E/D1sne/wQ /NjjjwJytBmFcsuLTZQaQG1K0GSyM3MBzSdNUVRhhVmrUnsNk30dCmI+QaTfWrgrFvYx8tFaSJE Pk0IYISliJNTyIrsBrJfbgq74gAIzXRYXYW/N5PF8bBTa6El1IRuYcq+hJr/gQ1X4PRK6DuPZVJ s3Pgt9Q3AEkiH1w== X-Developer-Key: i=ricardo@marliere.net; a=openpgp; fpr=030A8E9E424EE3C0655787E1C90B8A7C638658A6 Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move the usb_device_type, usb_if_device_type, usb_ep_device_type and usb_port_device_type variables to be constant structures as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Ricardo B. Marliere --- drivers/usb/core/endpoint.c | 2 +- drivers/usb/core/message.c | 2 +- drivers/usb/core/port.c | 2 +- drivers/usb/core/usb.c | 2 +- drivers/usb/core/usb.h | 8 ++++---- 5 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index a2530811cf7d..4b38b87a1343 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -141,7 +141,7 @@ static void ep_device_release(struct device *dev) kfree(ep_dev); } -struct device_type usb_ep_device_type = { +const struct device_type usb_ep_device_type = { .name = "usb_endpoint", .release = ep_device_release, }; diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 077dfe48d01c..67316d271596 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1849,7 +1849,7 @@ static int usb_if_uevent(const struct device *dev, struct kobj_uevent_env *env) return 0; } -struct device_type usb_if_device_type = { +const struct device_type usb_if_device_type = { .name = "usb_interface", .release = usb_release_interface, .uevent = usb_if_uevent, diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index c628c1abc907..84d36172b040 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -429,7 +429,7 @@ static const struct dev_pm_ops usb_port_pm_ops = { #endif }; -struct device_type usb_port_device_type = { +const struct device_type usb_port_device_type = { .name = "usb_port", .release = usb_port_device_release, .pm = &usb_port_pm_ops, diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index dc8d9228a5e7..a0c432b14b20 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -592,7 +592,7 @@ static char *usb_devnode(const struct device *dev, usb_dev->bus->busnum, usb_dev->devnum); } -struct device_type usb_device_type = { +const struct device_type usb_device_type = { .name = "usb_device", .release = usb_release_dev, .uevent = usb_dev_uevent, diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index bfecb50773b6..b8324ea05b20 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -144,10 +144,10 @@ static inline int usb_disable_usb2_hardware_lpm(struct usb_device *udev) extern const struct class usbmisc_class; extern const struct bus_type usb_bus_type; extern struct mutex usb_port_peer_mutex; -extern struct device_type usb_device_type; -extern struct device_type usb_if_device_type; -extern struct device_type usb_ep_device_type; -extern struct device_type usb_port_device_type; +extern const struct device_type usb_device_type; +extern const struct device_type usb_if_device_type; +extern const struct device_type usb_ep_device_type; +extern const struct device_type usb_port_device_type; extern struct usb_device_driver usb_generic_driver; static inline int is_usb_device(const struct device *dev)