usb-ccid: make ccid_write_data_block() cope with null buffers
static code analyzer complain: hw/usb/dev-smartcard-reader.c:816:5: warning: Null pointer passed as an argument to a 'nonnull' parameter memcpy(p->abData, data, len); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Clang Static Analyzer Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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@ -813,7 +813,10 @@ static void ccid_write_data_block(USBCCIDState *s, uint8_t slot, uint8_t seq,
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if (p->b.bError) {
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DPRINTF(s, D_VERBOSE, "error %d\n", p->b.bError);
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}
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if (len) {
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g_assert_nonnull(data);
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memcpy(p->abData, data, len);
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}
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ccid_reset_error_status(s);
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usb_wakeup(s->bulk, 0);
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}
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