qemu/include/hw/i2c
Peter Maydell 41742927ee hw/i2c/bitbang_i2c: Use in-place rather than malloc'd bitbang_i2c_interface struct
Currently the bitbang_i2c_init() function allocates a
bitbang_i2c_interface struct which it returns.  This is unfortunate
because it means that if the function is used from a DeviceState
init method then the memory will be leaked by an "init then delete"
cycle, as used by the qmp/hmp commands that list device properties.

Since three out of four of the uses of this function are in
device init methods, switch the function to do an in-place
initialization of a struct that can be embedded in the
device state struct of the caller.

This fixes LeakSanitizer leak warnings that have appeared in the
patchew configuration (which only tries to run the sanitizers
for the x86_64-softmmu target) now that we use the bitbang-i2c
code in an x86-64 config.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190702163844.20458-1-peter.maydell@linaro.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-07-03 10:51:35 +02:00
..
aspeed_i2c.h i2c: add aspeed i2c controller 2016-06-06 16:59:29 +01:00
bitbang_i2c.h hw/i2c/bitbang_i2c: Use in-place rather than malloc'd bitbang_i2c_interface struct 2019-07-03 10:51:35 +02:00
i2c.h i2c: Move bitbang_i2c.h to include/hw/i2c/ 2019-06-28 10:49:36 +02:00
imx_i2c.h Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
microbit_i2c.h arm: Stub out NRF51 TWI magnetometer/accelerometer detection 2019-01-29 11:46:03 +00:00
pm_smbus.h i2c:pm_smbus: Fix state transfer 2019-02-27 21:06:08 -06:00
ppc4xx_i2c.h hw/i2c/bitbang_i2c: Use in-place rather than malloc'd bitbang_i2c_interface struct 2019-07-03 10:51:35 +02:00
smbus_eeprom.h i2c: Split smbus into parts 2019-02-27 21:06:08 -06:00
smbus_master.h i2c: Split smbus into parts 2019-02-27 21:06:08 -06:00
smbus_slave.h i2c:smbus_slave: Add an SMBus vmstate structure 2019-02-27 21:06:08 -06:00