AuxXxilium/linux_dsm_epyc7002
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89efbe70b2
linux_dsm_epyc7002/drivers/tty/serial
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Lukas Wunner 89efbe70b2 serial: pl011: Don't leak amba_ports entry on driver register error 
pl011_probe() calls pl011_setup_port() to reserve an amba_ports[] entry,
then calls pl011_register_port() to register the uart driver with the
tty layer.

If registration of the uart driver fails, the amba_ports[] entry is not
released.  If this happens 14 times (value of UART_NR macro), then all
amba_ports[] entries will have been leaked and driver probing is no
longer possible.  (To be fair, that can only happen if the DeviceTree
doesn't contain alias IDs since they cause the same entry to be used for
a given port.)   Fix it.

Fixes: ef2889f7ff ("serial: pl011: Move uart_register_driver call to device")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v3.15+
Cc: Tushar Behera <tushar.behera@linaro.org>
Link: https://lore.kernel.org/r/138f8c15afb2f184d8102583f8301575566064a6.1597316167.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-18 13:32:27 +02:00
..
8250 serial: 8250_exar: Fix number of ports for Commtech PCIe cards 2020-08-18 13:27:26 +02:00
cpm_uart tty: serial: cpm_uart: Fix behaviour for non existing GPIOs 2020-06-27 13:50:51 +02:00
jsm tty: serial: Replace HTTP links with HTTPS ones 2020-07-21 20:04:54 +02:00
21285.c tty: serial: 21285: stop using the unused[] variable from struct uart_port 2019-12-19 20:10:28 +01:00
altera_jtaguart.c serial: altera_jtaguart: Replace HTTP links with HTTPS ones 2020-07-21 20:04:54 +02:00
altera_uart.c
amba-pl010.c tty/serial: Migrate amba-pl01* to use has_sysrq 2019-12-18 15:04:44 +01:00
amba-pl011.c serial: pl011: Don't leak amba_ports entry on driver register error 2020-08-18 13:32:27 +02:00
amba-pl011.h
apbuart.c tty/serial: Migrate apbuart to use has_sysrq 2019-12-18 15:04:44 +01:00
apbuart.h
ar933x_uart.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
arc_uart.c tty/serial: Migrate arc_uart to use has_sysrq 2019-12-18 15:04:45 +01:00
atmel_serial.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
atmel_serial.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
bcm63xx_uart.c Revert "tty: serial: bcm63xx: fix missing clk_put() in bcm63xx_uart" 2020-05-04 11:49:57 +02:00
clps711x.c tty/serial: Migrate clps711x to use has_sysrq 2019-12-18 15:04:46 +01:00
digicolor-usart.c tty/serial: digicolor: Fix digicolor-usart already registered warning 2019-06-10 19:08:31 +02:00
dz.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
dz.h
earlycon-arm-semihost.c
earlycon-riscv-sbi.c
earlycon.c serial: earlycon: prefer EARLYCON_DECLARE() variant 2020-03-07 09:52:01 +01:00
efm32-uart.c tty: serial: efm32: fix spelling mistake "reserverd" -> "reserved" 2020-02-19 11:38:58 +01:00
fsl_linflexuart.c tty/serial: Migrate fsl_linflexuart to use has_sysrq 2019-12-18 15:04:48 +01:00
fsl_lpuart.c tty: serial: fsl_lpuart: minimum baud rate support 2020-06-27 13:52:29 +02:00
icom.c tty: serial: Remove call to memset after pci_alloc_consistent 2019-09-04 12:43:44 +02:00
icom.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
ifx6x60.c tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
ifx6x60.h tty: serial: ifx6x60: Convert to GPIO descriptors 2020-03-12 10:03:54 +01:00
imx_earlycon.c tty: serial: imx: add imx earlycon driver 2020-07-29 17:11:02 +02:00
imx.c tty: serial: imx: enable imx serial console port as module 2020-07-29 17:10:59 +02:00
ip22zilog.c tty/serial: Migrate ip22zilog to use has_sysrq 2019-12-18 15:04:50 +01:00
ip22zilog.h
Kconfig tty: serial: imx: add imx earlycon driver 2020-07-29 17:11:02 +02:00
kgdb_nmi.c kdb: Switch to use safer dbg_io_ops over console APIs 2020-06-26 15:40:16 +01:00
kgdboc.c Linux 5.8-rc6 2020-07-20 09:39:11 +02:00
lantiq.c serial: lantiq: Make driver modular 2020-05-15 12:22:19 +02:00
lpc32xx_hs.c serial: lpc32xx_hs: Drop surplus include 2020-04-16 16:12:33 +02:00
Makefile {tty: serial, nand: onenand}: samsung: rename to fix build warning 2019-11-18 18:49:11 +01:00
max310x.c serial: max310x: turn off transmitter before activating AutoCTS or auto transmitter flow control 2019-09-05 09:57:44 +02:00
max3100.c
mcf.c
men_z135_uart.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00
meson_uart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
milbeaut_usio.c tty/serial: Migrate milbeaut_usio to use has_sysrq 2019-12-18 15:04:51 +01:00
mpc52xx_uart.c tty/serial: mpc52xx_uart: Don't zero port->sysrq 2019-12-18 15:04:52 +01:00
mps2-uart.c
msm_serial.c serial: msm_serial: add sparse context annotation 2020-07-24 10:44:27 +02:00
mux.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
mvebu-uart.c tty:serial:mvebu-uart:fix a wrong return 2020-03-05 21:26:34 +01:00
mxs-auart.c serial: mxs-auart: add missed iounmap() in probe failure and remove 2020-07-10 14:44:46 +02:00
omap-serial.c serial: Allow uart_get_rs485_mode() to return errno 2020-05-15 14:47:05 +02:00
owl-uart.c tty: serial: owl: add "much needed" clk_prepare_enable() 2020-04-23 15:46:30 +02:00
pch_uart.c serial: pch_uart: use generic power management 2020-07-21 20:04:54 +02:00
pic32_uart.c serial: pic32_uart: Use uart_console() helper 2020-03-12 10:00:22 +01:00
pic32_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
pmac_zilog.c serial: pmac_zilog: add sparse context annotation 2020-07-24 10:44:27 +02:00
pmac_zilog.h
pnx8xxx_uart.c tty/serial: Migrate pnx8xxx_uart to use has_sysrq 2019-12-18 15:04:57 +01:00
pxa.c tty/serial: Migrate pxa to use has_sysrq 2019-12-18 15:04:57 +01:00
qcom_geni_serial.c tty: serial: qcom_geni_serial: Drop __init from qcom_geni_console_setup 2020-08-18 13:25:58 +02:00
rda-uart.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
rp2.c
sa1100.c tty/serial: Migrate sa1100 to use has_sysrq 2019-12-18 15:04:59 +01:00
samsung_tty.c serial: samsung: fix spelling mistake 2020-06-27 13:46:09 +02:00
sb1250-duart.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
sc16is7xx.c sched,serial: Convert to sched_set_fifo() 2020-06-15 14:10:23 +02:00
sccnxp.c tty/serial: Migrate sccnxp to use has_sysrq 2019-12-18 15:05:00 +01:00
serial_core.c serial: core: Fix Coding Style 2020-07-21 20:04:54 +02:00
serial_mctrl_gpio.c serial: mctrl_gpio: Check for NULL pointer 2019-10-07 13:21:54 +02:00
serial_mctrl_gpio.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
serial_txx9.c tty/serial: Migrate serial_txx9 to use has_sysrq 2019-12-18 15:05:01 +01:00
serial-tegra.c Linux 5.8-rc7 2020-07-27 12:40:56 +02:00
sh-sci.c Revert "serial: sh-sci: Initialize spinlock for uart console" 2020-07-21 18:21:49 +02:00
sh-sci.h serial: sh-sci: Drop unused include 2020-04-16 16:13:34 +02:00
sifive.c Revert "tty: serial: add missing spin_lock_init for SiFive serial console" 2020-07-21 18:21:49 +02:00
sirfsoc_uart.c
sirfsoc_uart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
sprd_serial.c serial: sprd: remove redundant sprd_port cleanup 2020-03-18 12:20:04 +01:00
st-asc.c tty: st-asc: switch to using devm_gpiod_get() 2020-01-10 14:01:33 +01:00
stm32-usart.c serial: stm32: Add RS485 RTS GPIO control 2020-07-30 08:46:22 +02:00
stm32-usart.h tty: serial: Add modem control gpio support for STM32 UART 2020-05-15 12:24:15 +02:00
suncore.c
sunhv.c Revert "serial: sunhv: Initialize lock for non-registered console" 2020-07-21 18:21:49 +02:00
sunsab.c serial: sunsab: Return proper error code from console ->setup() hook 2020-06-25 14:21:28 +02:00
sunsab.h
sunsu.c tty/serial: Migrate sunsu to use has_sysrq 2019-12-18 15:05:06 +01:00
sunzilog.c serial: sunzilog: Return proper error code from console ->setup() hook 2020-06-25 14:22:17 +02:00
sunzilog.h
tegra-tcu.c
timbuart.c
timbuart.h tty: serial: Use the correct style for SPDX License Identifier 2020-03-07 09:52:01 +01:00
uartlite.c tty: serial: uartlite: Replace HTTP links with HTTPS ones 2020-07-21 20:04:54 +02:00
ucc_uart.c ARM: SoC-related driver updates 2020-02-08 14:04:19 -08:00
vr41xx_siu.c tty/serial: Migrate vr41xx_siu to use has_sysrq 2019-12-18 15:05:09 +01:00
vt8500_serial.c tty/serial: Migrate vt8500_serial to use has_sysrq 2019-12-18 15:05:09 +01:00
xilinx_uartps.c tty: xilinx_uartps: Really fix id assignment 2020-07-21 18:12:03 +02:00
zs.c TTY/Serial driver updates for 5.6-rc1 2020-01-29 10:13:27 -08:00
zs.h