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Home Page: http://www.embetronicx.com/tutorials/
This Directory contains the tutorials posted in www.embetronicx.com
Home Page: http://www.embetronicx.com/tutorials/
Add io_uring_userspace.c
in the Poll directory.
I will try to write an example by referring to the contents of that link.
Tutorials/Linux/Device_Driver/IOCTL/driver.c
Line 146 in 6886e9b
Tutorials/Linux/Device_Driver/procfs/driver.c
Line 252 in 6886e9b
sudo make
make -C /lib/modules/6.1.21-v7l+/build M=/home/mihir/Desktop/SPI modules
make[1]: Entering directory '/usr/src/linux-headers-6.1.21-v7l+'
CC [M] /home/mihir/Desktop/SPI/spi_ssd1306_driver.o
/home/mihir/Desktop/SPI/spi_ssd1306_driver.c: In function ‘etx_spi_init’:
/home/mihir/Desktop/SPI/spi_ssd1306_driver.c:67:12: error: implicit declaration of function ‘spi_busnum_to_master’ [-Werror=implicit-function-declaration]
67 | master = spi_busnum_to_master( etx_spi_device_info.bus_num );
| ^~~~~~~~~~~~~~~~~~~~
/home/mihir/Desktop/SPI/spi_ssd1306_driver.c:67:10: warning: assignment to ‘struct spi_controller *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
67 | master = spi_busnum_to_master( etx_spi_device_info.bus_num );
| ^
cc1: some warnings being treated as errors
make[2]: * [scripts/Makefile.build:250: /home/mihir/Desktop/SPI/spi_ssd1306_driver.o] Error 1
make[1]: * [Makefile:2012: /home/mihir/Desktop/SPI] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.1.21-v7l+'
make: * [Makefile:8: all] Error 2
Request to suggest solution for the above problem.
When invoking the requested irq number, Replaces the x86 dependent int
instruction to generic_handle_irq for general architecture support.
after loading module using ->sudo insmod gpio_driver.ko
changed permissions ->sudo chmod 666 /dex/ext_device
and used sudo echo 1 > /edv/ext_device
after that it is consuming all the memeory availabe in raspberry pi 2 board so i cant messages as memery full even in file manger also i can able to see plz help me to solve the issue
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