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resolve nullpointer crash on kernel 5.10 #13

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resolve nullpointer crash on kernel 5.10 #13

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9edff66
Update ttyebusm.c
peter-kutak May 22, 2021
6628f3a
Beginning with kernel 5.10 RASPI 2 and 3 uses IRQ 114 and RASPI 4 use…
peter-kutak Jun 6, 2021
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4 changes: 4 additions & 0 deletions ttyebusm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -813,7 +813,11 @@ unsigned int ttyebus_raspi_model(void)
set_fs(old_fs);
return 0;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,14,0)
NumBytes = kernel_read(filp, buf, sizeof(buf), 0);
#else
NumBytes = filp->f_op->read(filp, buf, sizeof(buf), &filp->f_pos);
#endif
set_fs(old_fs);

// restore the segment descriptor
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