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[PATCH 00/16] tty: TIOCSSERIAL fixes and clean ups

by Johan Hovold

TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. This series fixes up the various ways in which driver authors have gotten the implementation wrong over the years, like, for example, jiffies conversions, permissions checks and error handling. The de-facto standard for error handling is to ignore any unsupported features and immutable parameters (cf. UPF_FIXED_PORT and deprecated ASYNC flags). Permission checking should prevent an unprivileged user from changing anything but the ASYNC_USR flags (and custom divisor) by returning -EPERM. These patches are against tty-next, but the staging ones could otherwise go through either tree. I'll be sending the corresponding USB fixes separately. Johan Johan Hovold (16): staging: fwserial: fix TIOCSSERIAL jiffies conversions staging: fwserial: fix TIOCSSERIAL permission check staging: fwserial: fix TIOCSSERIAL implementation staging: fwserial: fix TIOCGSERIAL implementation staging: greybus: uart: fix TIOCSSERIAL jiffies conversions staging: greybus: uart: fix unprivileged TIOCCSERIAL staging: greybus: uart: clean up TIOCGSERIAL tty: amiserial: fix TIOCSSERIAL permission check tty: amiserial: add missing TIOCSSERIAL jiffies conversions tty: moxa: fix TIOCSSERIAL jiffies conversions tty: moxa: fix TIOCSSERIAL permission check tty: moxa: fix TIOCSSERIAL implementation tty: mxser: fix TIOCSSERIAL jiffies conversions tty: mxser: fix TIOCSSERIAL permission check pcmcia: synclink_cs: drop redundant tty-port initialisation tty: synclink_gt: drop redundant tty-port initialisation drivers/char/pcmcia/synclink_cs.c | 2 -- drivers/staging/fwserial/fwserial.c | 19 +++++++++--------- drivers/staging/greybus/uart.c | 16 +++++++-------- drivers/tty/amiserial.c | 25 +++++++++++++++++------ drivers/tty/moxa.c | 21 +++++++++---------- drivers/tty/mxser.c | 31 ++++++++++++++++++++--------- drivers/tty/synclink_gt.c | 2 -- 7 files changed, 68 insertions(+), 48 deletions(-) -- 2.26.3

4 years, 12 months

[PATCH v2] staging: greybus: arche-platform: Ending line with argument

by Beatriz Martins de Carvalho

Remove checkpatch check "CHECK: Lines should not end with a '('" with argument present in next line. Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz(a)gmail.com> --- Changes in v2: - correction commit title - correction commit message --- drivers/staging/greybus/arche-platform.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index eebf0deb39f5..e374dfc0c92f 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -77,9 +77,8 @@ static void arche_platform_set_state(struct arche_platform_drvdata *arche_pdata, } /* Requires arche_pdata->wake_lock is held by calling context */ -static void arche_platform_set_wake_detect_state( - struct arche_platform_drvdata *arche_pdata, - enum svc_wakedetect_state state) +static void arche_platform_set_wake_detect_state(struct arche_platform_drvdata *arche_pdata, + enum svc_wakedetect_state state) { arche_pdata->wake_detect_state = state; } @@ -181,9 +180,8 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid) WD_STATE_COLDBOOT_START) { arche_platform_set_wake_detect_state(arche_pdata, WD_STATE_COLDBOOT_TRIG); - spin_unlock_irqrestore( - &arche_pdata->wake_lock, - flags); + spin_unlock_irqrestore(&arche_pdata->wake_lock, + flags); return IRQ_WAKE_THREAD; } } -- 2.25.1

5 years

[PATCH] staging: greybus: arche-platform: Fix ending '(' warnings

by Beatriz Martins de Carvalho

Fix checkpatch check "CHECK: Lines should not end with a '('" in arche-platform.c:80 and arche-platform.c:184. Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz(a)gmail.com> --- drivers/staging/greybus/arche-platform.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index eebf0deb39f5..e374dfc0c92f 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -77,9 +77,8 @@ static void arche_platform_set_state(struct arche_platform_drvdata *arche_pdata, } /* Requires arche_pdata->wake_lock is held by calling context */ -static void arche_platform_set_wake_detect_state( - struct arche_platform_drvdata *arche_pdata, - enum svc_wakedetect_state state) +static void arche_platform_set_wake_detect_state(struct arche_platform_drvdata *arche_pdata, + enum svc_wakedetect_state state) { arche_pdata->wake_detect_state = state; } @@ -181,9 +180,8 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid) WD_STATE_COLDBOOT_START) { arche_platform_set_wake_detect_state(arche_pdata, WD_STATE_COLDBOOT_TRIG); - spin_unlock_irqrestore( - &arche_pdata->wake_lock, - flags); + spin_unlock_irqrestore(&arche_pdata->wake_lock, + flags); return IRQ_WAKE_THREAD; } } -- 2.25.1

5 years

[PATCH] greybus: remove stray nul byte in apb_log_enable_read output

by Rasmus Villemoes

Including a nul byte in the otherwise human-readable ascii output from this debugfs file is probably not intended. Signed-off-by: Rasmus Villemoes <linux(a)rasmusvillemoes.dk> --- drivers/greybus/es2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/greybus/es2.c b/drivers/greybus/es2.c index 48ad154df3a7..86a7fbc7fe13 100644 --- a/drivers/greybus/es2.c +++ b/drivers/greybus/es2.c @@ -1171,7 +1171,7 @@ static ssize_t apb_log_enable_read(struct file *f, char __user *buf, char tmp_buf[3]; sprintf(tmp_buf, "%d\n", enable); - return simple_read_from_buffer(buf, count, ppos, tmp_buf, 3); + return simple_read_from_buffer(buf, count, ppos, tmp_buf, 2); } static ssize_t apb_log_enable_write(struct file *f, const char __user *buf, -- 2.29.2

5 years

[PATCH] staging: greybus: fix fw is NULL but dereferenced

by Jian Dong

From: Jian Dong <dongjian(a)yulong.com> fixes coccicheck Error: drivers/staging/greybus/bootrom.c:301:41-45: ERROR: fw is NULL but dereferenced. if procedure goto label directly, ret will be nefative, so the fw is NULL and the if(condition) end with dereferenced fw. let's fix it. Signed-off-by: Jian Dong <dongjian(a)yulong.com> --- drivers/staging/greybus/bootrom.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/staging/greybus/bootrom.c b/drivers/staging/greybus/bootrom.c index a8efb86..0439efa 100644 --- a/drivers/staging/greybus/bootrom.c +++ b/drivers/staging/greybus/bootrom.c @@ -246,7 +246,7 @@ static int gb_bootrom_get_firmware(struct gb_operation *op) struct gb_bootrom_get_firmware_response *firmware_response; struct device *dev = &op->connection->bundle->dev; unsigned int offset, size; - enum next_request_type next_request; + enum next_request_type next_request = NEXT_REQ_GET_FIRMWARE; int ret = 0; /* Disable timeouts */ @@ -298,10 +298,10 @@ static int gb_bootrom_get_firmware(struct gb_operation *op) queue_work: /* Refresh timeout */ - if (!ret && (offset + size == fw->size)) - next_request = NEXT_REQ_READY_TO_BOOT; - else + if (!!ret) next_request = NEXT_REQ_GET_FIRMWARE; + else if (offset + size == fw->size) + next_request = NEXT_REQ_READY_TO_BOOT; gb_bootrom_set_timeout(bootrom, next_request, NEXT_REQ_TIMEOUT_MS); -- 1.9.1

5 years

[PATCH 00/10] spi: finalize 'delay_usecs' removal/transition

by Alexandru Ardelean

A while back I started the introduction of the 'spi_delay' data type: https://lore.kernel.org/linux-spi/20190926105147.7839-1-alexandru.ardelean@… Users of the 'delay_usecs' were removed from drivers. Now it's time to remove the 'delay_usecs' from the SPI subsystem and use only the 'delay' field. This changeset adapts all SPI drivers to do without 'delay_usecs'. Additionally, for greybus we need to adapt it to use the 'delay' in nano-seconds and convert it to micro-seconds. Alexandru Ardelean (10): spi: spi-axi-spi-engine: remove usage of delay_usecs spi: bcm63xx-spi: don't check 'delay_usecs' field spi: spi-bcm-qspi: replace 'delay_usecs' with 'delay.value' check spi: spi-sh: replace 'delay_usecs' with 'delay.value' in pr_debug spi: spi-tegra20-flash: don't check 'delay_usecs' field for spi transfer staging: greybus: spilib: use 'spi_delay_to_ns' for getting xfer delay spi: spi-falcon: remove check for 'delay_usecs' spi: fsl-espi: remove usage of 'delay_usecs' field spi: core: remove 'delay_usecs' field from spi_transfer spi: docs: update info about 'delay_usecs' Documentation/spi/spi-summary.rst | 7 +++++-- drivers/spi/spi-axi-spi-engine.c | 12 ++++-------- drivers/spi/spi-bcm-qspi.c | 2 +- drivers/spi/spi-bcm63xx.c | 2 +- drivers/spi/spi-falcon.c | 2 +- drivers/spi/spi-fsl-espi.c | 17 +++++------------ drivers/spi/spi-sh.c | 4 ++-- drivers/spi/spi-tegra20-sflash.c | 3 +-- drivers/spi/spi.c | 1 - drivers/staging/greybus/spilib.c | 5 ++++- include/linux/spi/spi.h | 12 ------------ 11 files changed, 24 insertions(+), 43 deletions(-) -- 2.29.2

5 years

[PATCH v2] greybus/operation: Drop reference when message has been sent

by Lv Yunlong

In gb_operation_response_send, get an extra reference before gb_message_send() with this comment "/* Reference will be dropped when message has been sent. */". Therefore, we should drop the got reference not only in the error branch, but also in the complete branch. Signed-off-by: Lv Yunlong <lyl2019(a)mail.ustc.edu.cn> --- drivers/greybus/operation.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/greybus/operation.c b/drivers/greybus/operation.c index 8459e9bc0749..500b3fe53a04 100644 --- a/drivers/greybus/operation.c +++ b/drivers/greybus/operation.c @@ -855,6 +855,10 @@ static int gb_operation_response_send(struct gb_operation *operation, if (ret) goto err_put_active; + /*Drop reference after message send completes. */ + gb_operation_put_active(operation); + gb_operation_put(operation); + return 0; err_put_active: -- 2.25.1

5 years

[PATCH] greybus/operation: Drop reference when message has been set

by Lv Yunlong

In gb_operation_response_send, get an extra reference before gb_message_send() with this comment "/* Reference will be dropped when message has been sent. */". Therefore, we should drop the got reference not only in the error branch, but also in the complete branch. Signed-off-by: Lv Yunlong <lyl2019(a)mail.ustc.edu.cn> --- drivers/greybus/operation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/greybus/operation.c b/drivers/greybus/operation.c index 296f0b93d171..500b3fe53a04 100644 --- a/drivers/greybus/operation.c +++ b/drivers/greybus/operation.c @@ -855,7 +855,7 @@ static int gb_operation_response_send(struct gb_operation *operation, if (ret) goto err_put_active; - /*Drop reference after message send successfully. */ + /*Drop reference after message send completes. */ gb_operation_put_active(operation); gb_operation_put(operation); -- 2.25.1

5 years

[PATCH] staging: greybus: Fix blank line style issue in sdio.c

by Amrit Khera

This change fixes a checkpatch check for "Please don't use multiple blank lines". Signed-off-by: Amrit Khera <amritkhera98(a)gmail.com> --- drivers/staging/greybus/sdio.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/staging/greybus/sdio.c b/drivers/staging/greybus/sdio.c index 0939f4a4c963..37bf04c22dbc 100644 --- a/drivers/staging/greybus/sdio.c +++ b/drivers/staging/greybus/sdio.c @@ -33,7 +33,6 @@ struct gb_sdio_host { bool read_only; }; - #define GB_SDIO_RSP_R1_R5_R6_R7 (GB_SDIO_RSP_PRESENT | GB_SDIO_RSP_CRC | \ GB_SDIO_RSP_OPCODE) #define GB_SDIO_RSP_R3_R4 (GB_SDIO_RSP_PRESENT) -- 2.20.1

5 years, 1 month

[PATCH] staging: greybus: minor code style fix

by Manikantan Ravichandran

checkpatch warning fix for string split across lines Signed-off-by: Manikantan Ravichandran <ravman1991(a)gmail.com> --- drivers/staging/greybus/audio_manager_sysfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/greybus/audio_manager_sysfs.c b/drivers/staging/greybus/audio_manager_sysfs.c index ab882cc49b41..fcd518f9540c 100644 --- a/drivers/staging/greybus/audio_manager_sysfs.c +++ b/drivers/staging/greybus/audio_manager_sysfs.c @@ -18,8 +18,8 @@ static ssize_t manager_sysfs_add_store(struct kobject *kobj, struct gb_audio_manager_module_descriptor desc = { {0} }; int num = sscanf(buf, - "name=%" GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF "s " - "vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X", + "name=%" GB_AUDIO_MANAGER_MODULE_NAME_LEN_SSCANF + "s vid=%d pid=%d intf_id=%d i/p devices=0x%X o/p devices=0x%X", desc.name, &desc.vid, &desc.pid, &desc.intf_id, &desc.ip_devices, &desc.op_devices); -- 2.17.1

5 years, 1 month

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