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61a9346f60
qemu/hw/char
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Paolo Bonzini 61a9346f60 serial: fix DLL writes 
Commit 0147883450 tries to handle
word-sized writes to DLL/DLH, but due to a typo,
this patch is causing tracebacks in all Linux kernels running the PXA
serial driver, due to an unexpected DLL register value. Here is the
surrounding code from drivers/tty/serial/pxa.c:

	serial_out(up, UART_DLL, quot & 0xff);		/* LS of divisor */

	/*
	 * work around Errata #75 according to Intel(R) PXA27x
	 * Processor Family Specification Update (Nov 2005)
	 */
	dll = serial_in(up, UART_DLL);
	WARN_ON(dll != (quot & 0xff));	// <-- warning

Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 0147883450
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-02 18:47:55 +02:00
..
bcm2835_aux.c bcm2835_aux: Swap RX and TX interrupt assignments 2018-07-16 17:18:42 +01:00
cadence_uart.c maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
cmsdk-apb-uart.c hw/char/cmsdk-apb-uart.c: Accept more input after character read 2018-05-04 18:05:50 +01:00
debugcon.c misc: drop old i386 dependency 2017-12-18 17:07:03 +03:00
digic-uart.c hw/digic: Add trailing '\n' to qemu_log() calls 2018-06-08 13:15:33 +01:00
escc.c hw/char: remove legacy interface escc_init() 2018-02-16 12:14:26 +11:00
etraxfs_ser.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
exynos4210_uart.c hw/char/exynos4210_uart.c: Remove unneeded handling of NULL chardev 2018-04-26 13:57:00 +01:00
grlib_apbuart.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
imx_serial.c imx_serial: Generate interrupt on receive data ready if enabled 2018-08-20 11:24:31 +01:00
ipoctal232.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
lm32_juart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
lm32_uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
Makefile.objs hw: make virtio devices configurable via default-configs/ 2018-06-01 15:14:31 +02:00
mcf_uart.c hw: Do not include "exec/address-spaces.h" if it is not necessary 2018-06-01 14:15:10 +02:00
milkymist-uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
omap_uart.c chardev: move headers to include/chardev 2017-06-02 11:33:52 +04:00
parallel-isa.c hw/isa: Move parallel_hds_isa_init() to hw/char/parallel-isa.c 2018-03-12 16:12:47 +01:00
parallel.c hw/char/parallel: Convert from pdebug() macro to trace events 2018-06-29 15:04:18 +01:00
pl011.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
sclpconsole-lm.c s390x/sclp: clean up sclp masks 2018-03-08 15:49:23 +01:00
sclpconsole.c s390x/sclp: clean up sclp masks 2018-03-08 15:49:23 +01:00
serial-isa.c serial-isa: Use MAX_ISA_SERIAL_PORTS instead of MAX_SERIAL_PORTS 2018-04-26 13:57:00 +01:00
serial-pci.c pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices 2017-10-15 05:54:43 +03:00
serial.c serial: fix DLL writes 2018-10-02 18:47:55 +02:00
sh_serial.c hw/char/sh_serial: Add timeout handling to unbreak serial input 2018-10-02 18:47:55 +02:00
spapr_vty.c spapr: Implement bug in spapr-vty device to be compatible with PowerVM 2017-11-22 15:28:37 +11:00
stm32f2xx_usart.c hw/char/stm32f2xx_usart: fix TXE/TC bit handling 2018-02-22 15:12:51 +00:00
terminal3270.c chardev: introduce qemu_chr_timeout_add_ms() 2018-01-12 13:22:02 +01:00
trace-events hw/char/parallel: Convert from pdebug() macro to trace events 2018-06-29 15:04:18 +01:00
virtio-console.c qapi: Drop qapi_event_send_FOO()'s Error ** argument 2018-08-28 18:21:38 +02:00
virtio-serial-bus.c virtio-serial: fix heap-over-flow 2018-04-09 17:35:46 +03:00
xen_console.c xen: remove other open-coded use of libxengnttab 2018-05-22 11:43:21 -07:00
xilinx_uartlite.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00